Year	PPG (DOD, current US$)
1972	78648255
1973	421896516.2
1974	1092747747.5
1975	1476222179.8
1976	1715457427.3
1977	2050904857
1978	2448475243.5
1979	2511352006.3
1980	3166017459.9
1981	3516928364
1982	4183903175.6
1983	4610914302.9
1984	4946492994.7
1985	5875143938.6
1986	7249992405
1987	8823135432.2
1988	9386544711.8
1989	9914962123.9
1990	11510306592.7
1991	12052093948.3
1992	12462815387.6
1993	13290060170.6
1994	14626859288.4
1995	14914016246.4
1996	14489520831.9
1997	13710476215.1
1998	14936065155.5
1999	15812878155.3
2000	14989457889.5
2001	14410233960.6
2002	15980821849.9
2003	17679803154
2004	18698272322.6
2005	17438901410
2006	18435555272.7
2007	19433498590.1
2008	20273562501.9
2009	21184650224.6
2010	21145542685.2
2011	22217936348.9
2012	24196786408.2
2013	25034676366.2
2014	26542147314.4
2015	27103735482.9
2016	29095257693.1
2017	35282720722.6
2018	41321842241.5
2019	46416580489.2
2020	54830387715.7
2021	62473497623.7
2022	67608481844