Year	PPG (DOD, current US$)
1970	139132049.5
1971	159225800.6
1972	176579512.3
1973	193695856.2
1974	241740024.7
1975	335602929.3
1976	423159074.9
1977	542281446.7
1978	686355382
1979	845574388.2
1980	1076609838.8
1981	1339381318.7
1982	1518777096.5
1983	1739733835.9
1984	1897038896
1985	2264868806.8
1986	2502773314.2
1987	2819363224.4
1988	2873668603.9
1989	2972740557.7
1990	3517442797.4
1991	3181445772.8
1992	3587796065.9
1993	4001778070.9
1994	4258328962.5
1995	4308214293.4
1996	4113825479.6
1997	4151095561.7
1998	4044295120.6
1999	4355936207.9
2000	4442372937.8
2001	4080203135.4
2002	4277411404.1
2003	4614178239.1
2004	4989655532.3
2005	4144881601.2
2006	3008525317.2
2007	2008051518.7
2008	2334245028.2
2009	2480951447.1
2010	2834475232.5
2011	3217995723.9
2012	3677430447.1
2013	5206401503.8
2014	5568468020.8
2015	5921242691
2016	6084239178.3
2017	7126244637.2
2018	7350775727.3
2019	7751274271.1
2020	8588775786
2021	8627295930.9
2022	8997851501.2