Year	PPG (DOD, current US$)
1970	608141874.1
1971	574399834.3
1972	668578038.4
1973	693142204.6
1974	776623504
1975	891599347.2
1976	1136414695.7
1977	1498162861.4
1978	1774509916.2
1979	1964847026.9
1980	2263829582.5
1981	2814205136.1
1982	2930924593.2
1983	3350460998.6
1984	3467123725.6
1985	3604912459.7
1986	4165389848.6
1987	4719575810.8
1988	4235875571.1
1989	3523143762.5
1990	3782128620.3
1991	3627113833.9
1992	3767038817.3
1993	3788247141.9
1994	4211031072.5
1995	4545748451.6
1996	4340220518.2
1997	4209465571.8
1998	4368377526.1
1999	4315702864.8
2000	4209341524.7
2001	3194375307.7
2002	3582211732.6
2003	4182918936.6
2004	4578512066.8
2005	4589843582.9
2006	3198539466.3
2007	2178149345.9
2008	2421319357.7
2009	2572014064.4
2010	2829604751.5
2011	3433273512.9
2012	4189264509.5
2013	5281733923.8
2014	5744904672.7
2015	6335483734.8
2016	7010094456.4
2017	9150676176.4
2018	9905105772.1
2019	10999855991.6
2020	11877490891.3
2021	12772869255.9
2022	13371906744.4