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From what I've heard, its the NAG, the UK-based Numerical Algorithms Group, which has mainly been responsible for the continued usage of Fortran.
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I would guess it has to do with supercomputers in large part. Fortran has been used with them for decades and still is. Nvidia has support for CUDA in Fortran and that makes it possible to adapt code to run on GPUs which almost every modern supercomputer has these days.
"They have a consciousness, they have a life, they have a soul! Damn you! Let the rabbits wear glasses! Save our brothers! Can I get an amen?"
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Quote: I would guess it has to do with supercomputers in large part.
That's possible indeed ... Perhaps surprisingly, there is a lot of up-to-date information, for example Fortran - Wikipedia, it makes me also think about possible use in LLM training ...
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'mother tongue' for me as well.
"A little time, a little trouble, your better day"
Badfinger
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When I learned C I forgot Fortran, and was happy!
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I had a class in C and FORTRAN in 87/88. I already knew FORTRAN, and I took it mostly for the C.
The teacher tortured us by assigning programs to be solved in the language least suited to solve the problem.
Write some numerical algorithm in C( not FORTRAN ).
Write some parsing and word counting code in FORTRAN(not C)
Kind of proved the point that you can solve any problem with any language.
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Can we compare this with filling a round hole with a square peg? Only that the hole and peg are made of somewhat flexible rubbery material.
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1971 1st year university Computer Science - FORTRAN IV on an IBM 360 with the WATFOR compiler which later became WATFIV. Punched cards and IBM golfball terminals.
Then onto IBM 370 then onto CDC 7000 series all with FORTRAN IV. All this mixed with COBOL, PL/1 and assembler.
Currently working with C# and thinking about learning Angular
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I thought I'd need a card puncher to write true Fortran ...
(remembering that dangerous type of stack)
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I have been writing Fortran since 1989 and have never used a punched card (or tape)
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Around 1980 we had to use the puncher in my first Fortran class in the university.
Later I bought a Z80-PC with an 8" floppy - what a progress! 
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IBM 026 card punch machines and Olivetti teletypes producing blue paper tape where my starting point. Still have some original, unpunched, Fortran Statement cards kept as a souvenir.
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I remember, when I studied at the Indian Institute of Science, in Bengaluru, India, in the early 90's, our lab had a big stack of (unpunched) punch cards. I have kept a few of them as a souvenir.
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I remember having to modify someone's C who wrote mainly in Fortran. It was basically Fortran with C syntax. You can write Fortran in any language.
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I still do that. I tend to write Fortran in C# and JavaScript. 
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I'm not aware of an arithmetic IF in C 
Charlie Gilley
“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759
Has never been more appropriate.
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It is written in longhand C as
if (expr < 0) goto lab1;
else if (expr == 0) goto lab2;
else goto lab3; If you accept use of jump labels at all, that is.
The C version is not as compact as Fortran, but you could easily make a #define for putting it on a single line.
Religious freedom is the freedom to say that two plus two make five.
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well for sure. and for the record I despise #define/macros unless they are very very simple. I've seen some developers put darn near full functions in them. I never understood why you would do that, but whatever.
Charlie Gilley
“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759
Has never been more appropriate.
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"millennium"
A little bold there . But anyway, I've always been astonished at the amount of code that is our there written in "legacy" languages that run the world. Cobol, FORTRAN, PL1, God forbid Pascal. I'm in the process this year of proposing a system re-write of a FORTAN manufacturing system before everybody that knows about it is dead, including myself. I dug into this 10 years back or so, and I realized that 40% of the code is user input, 20% is actually processing data, and the last 40% is report generation. Moving this to a modern architecture will likely reduce the code base by 75%.
Meanwhile this company has spent millions trying to create an equivalent system. I'm shooting for retirement income
Charlie Gilley
“They who can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety.” BF, 1759
Has never been more appropriate.
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My First computer language was also FORTRAN, though a bit earlier in 1965. The first run of my first program caused a core dump because I left out a minus sign. I had no idea what that was at that time, but it seemed to excite the people assisting us in the lab. The corrected program got the results I wanted. Haven't used it since my student days though.
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Amarnath S wrote: FORTRAN comes in the Top 10
I wouldn't get too excited.
If you look at the chart Fortran has been bubbling along at about the same rate for decades. The rate of change around level 10 is at tenths of a percent. Visual Basic is almost twice as high and COBOL is only 0.6% lower.
Matter of fact Visual Basic percentage change went down in the in the last month than the entire value for Fortran.
If you want to get excited then C, C++, Java and C# together dropped an amazing 10%.
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... headed
Quote: Receive packages at your convenience
How will they know when I'm in there?
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From the giant invisible flashing sign on the roof. That's the only explanation I have for why they always turn up when I'm in there>*. I suspect they have special goggles to spot when it's on.
* My roof, my convenience, obviously.
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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Amazon : Alexa, is Richard home ?
CI/CD = Continuous Impediment/Continuous Despair
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Alexa: "I found 5,000 results for 'ice richer dome'; ordering the ten most expensive for express delivery now." 
"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer
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