Year	PPG (TDS, current US$)
1970	9039288.9
1971	9496535.8
1972	9517049.9
1973	24524860.9
1974	13951504
1975	10458687.6
1976	7310030.7
1977	16025295.4
1978	9736424
1979	17085729.6
1980	35855845.9
1981	45432117.1
1982	43179302.1
1983	48327867.2
1984	57292643.1
1985	56152239.9
1986	58021868.1
1987	67098383.2
1988	101834548.9
1989	96876662.6
1990	83733081.3
1991	100448075.5
1992	76348533.4
1993	123232633.4
1994	119919740.3
1995	102897086
1996	93461946.5
1997	97625983.6
1998	93405847.4
1999	88592812
2000	46850022.7
2001	30299748.7
2002	48782080
2003	63375952.1
2004	70197882.1
2005	131572920.2
2006	93728200
2007	61961264.5
2008	67302576.3
2009	67157910.5
2010	60976831.6
2011	61758767.3
2012	66286819.7
2013	79564638.7
2014	95571857.1
2015	86319365.4
2016	101540301.7
2017	177491407.8
2018	321666974.2
2019	280980636
2020	311913932.3
2021	589501193.6
2022	699607264.6