Apple's R&D expenditures from 1995-2013

Here is a chart mapping about Apple R&D expenditures from 1995 to 2013:

And here is another chart about Apple expenditure as a % of net sales:

I don't know you but my first thought about the figures is:

• The R&D expenditure rocket following the return of Steve Jobs.
• The second chart  is more a reflection of Apple's astronomical revenue growth during that same time period.

Note: You can see the Apple SEC filling forms here: 

http://investor.apple.com