According to the Bureau of Economic Analysis, GDP of the USA in 2004 was 21.3 Trillion.
Manufacturing accounted for 4.3 Trillon.
Agriculture, 319 Billion, Mining 306 Billion, Construction 1,050 Billion, Information (software, Movies, Music Recording) 1,107 Billion, Finance and Insurance, 1,542 Billon.
So Manufacturing is equal to about 20% of the GDP and roughly equal to Agriculture, Mining, Construction, Information and Finance combined.
Yes, we do still make stuff.