http://www.computerworld.com/s/article/9220545/IT_industry_shrinks_as_employer_in_past_decadeSome interest statistics from the article. We can blame the offshoring of all the jobs. Keep in mind that the H1B/L1 Visa thing has exploded in the last 10 years. Stagnant job market and more people is never good. There is an interesting map where you can click on each state and see how its changed.
Total employed in IT in 2001: 6.5M
Total employed in IT in 2011: 5.9M
Tech manufacturing in 2001: 1.8M
Tech manufacturing in 2011: 1.27M
Communication services in 2000: 1.8M
Communication services in 2011: 1.2M
Software Services in 2000: 1.6M
Software Services in 2011: 1.77M
Engineering and tech services in 2005: 1.5M
Engineering and tech services in 2011: 1.64M