Year	PPG (DOD, current US$)
1991	86200133.1
1992	126853823.7
1993	178987293.2
1994	247576173.3
1995	332006725.9
1996	406192837.9
1997	413719706.2
1998	506241511.2
1999	583745362.1
2000	920960202.7
2001	970052069.1
2002	994817253.8
2003	1231771684.1
2004	1399398801.2
2005	1372154320.1
2006	1574574789.9
2007	1784599695.4
2008	2293726087.3
2009	2874058234.3
2010	3210131111.3
2011	3365051003.3
2012	3547863788
2013	3755990648.1
2014	3665061486.8
2015	3844243189.6
2016	3760800782.1
2017	4335422394
2018	4334363163.3
2019	4160002469.3
2020	4896459664.3
2021	5302895132.6
2022	4859519255