Year	PPG (DOD, current US$)
1984	10594000
1985	12804000
1986	16888000
1987	21115000
1988	26597000
1989	36481000
1990	44167000
1991	48620000
1992	47432000
1993	49758000
1994	55235000
1995	54172000
1996	62645000
1997	112003000
1998	124361000
1999	133755000
2000	152989000
2001	214558000
2002	264750000
2003	313970000
2004	312616000
2005	290336000
2006	285200000
2007	269686000
2008	244432000
2009	222850000
2010	198148000