Year	PPG (TDS, current US$)
1970	1355920
1971	2301346.9
1972	5078815.2
1973	7511188.2
1974	18294739.6
1975	20159825
1976	26333540.6
1977	27079532.5
1978	30632093.4
1979	48992054.5
1980	61216914.9
1981	67229184.8
1982	95775430.8
1983	97987112.7
1984	128572095.6
1985	125277986.4
1986	116803494.7
1987	169486791.6
1988	310940772.6
1989	231341474.5
1990	270289924.9
1991	234125576
1992	198678775.6
1993	255680747.1
1994	329945793.5
1995	286319990.1
1996	247434407.8
1997	271679515.6
1998	169882801.6
1999	161070967.9
2000	169403243.9
2001	145710695.5
2002	140366262.7
2003	171494230.6
2004	175594040.1
2005	151988267.2
2006	158310890
2007	210753918
2008	195176365.1
2009	83225851.1
2010	83788685
2011	98495199.8
2012	96221019
2013	93211736.5
2014	93871605.4
2015	87353453.8
2016	98181364.9
2017	134311605.3
2018	180898991.7
2019	430791699
2020	988517238.9
2021	644503010.6
2022	369827864.9