Year	PPG (TDS, current US$)
1970	41545447
1971	41035333.9
1972	49705379.9
1973	54704944.5
1974	69025751.7
1975	138474611.6
1976	128842566.9
1977	126167524.2
1978	91235987.4
1979	78105743.8
1980	84469369
1981	93860907.8
1982	142980467.6
1983	165408033.4
1984	192711974.3
1985	215024972.5
1986	256806938.2
1987	318242147.4
1988	326038894.6
1989	304990670.5
1990	284891977.9
1991	290439028.7
1992	351489999.4
1993	366044157.9
1994	379564444
1995	387832714.2
1996	388425845
1997	408161759.9
1998	437542704.5
1999	566544214
2000	617581571.3
2001	527916873.8
2002	511904276.4
2003	484613979.9
2004	543996763.8
2005	311249373
2006	688690338.2
2007	729189486.7
2008	1006843318.7
2009	1108831845.1
2010	1177943797.8
2011	1069091455.7
2012	1744199976.1
2013	1329488733
2014	3356644088.5
2015	2448452627.4
2016	2110372002.3
2017	3456233182.8
2018	4436695314.1
2019	4965997686.1
2020	4353655797.4
2021	4144767744.6
2022	2015044734.7