Year	PPG (DOD, current US$)
1993	276435325
1994	346320365.8
1995	384852891
1996	469589255.3
1997	1338197230.3
1998	1869814984.4
1999	2311178372.3
2000	2271305528.7
2001	1855919905.1
2002	1583048048.2
2003	1445254581.4
2004	1226597935.1
2005	877830723.3
2006	730469932
2007	674253666.7
2008	666171906.8
2009	596040639.1
2010	1513130739.8
2011	4108655976.5
2012	6315347767.4
2013	8053577436.7
2014	7213731154.5
2015	6868894345.3
2016	7891830350.8
2017	8087914879.2
2018	7722184515.8
2019	6375949945.6
2020	5342213107
2021	4386482786.6
2022	3986972418.9