Regex - printing the digit right before '+' symbol

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Python

regular-expression

From resume text, I want to extract the number of years of experience of a candidate.

How I intended on obtaining this-->
Years of experience is usually mentioned as '4 years' or '6+ years'.

How do I include '+' in the code while ensuring that the symbol's literal meaning(One or more occurrences) isn't considered?

Also, how to accept a decimal number in the same - Eg: 6.5 Years?

What I have tried:

The following code works only when the number is mentioned as 'X years'.

< lang="Python">

<pre>exp_p='[^\d]*(\d*) years|Years|year|Year