Year	PPG (TDS, current US$)
1970	10800
1971	15215.7
1972	40025.7
1973	483172.7
1974	433044.3
1975	443591.8
1976	356698.7
1977	406719.3
1978	440246.3
1979	798895.8
1980	1468268.5
1981	3281208
1982	5701698.7
1983	6742906.5
1984	6537180.3
1985	15954169.8
1986	12994263.5
1987	11947069.4
1988	12340987.5
1989	12241163
1990	14656964.8
1991	15504261.3
1992	15727243.5
1993	17279735.5
1994	23903387.2
1995	35257275
1996	38427057.9
1997	34821552.9
1998	40149970.7
1999	43152335.3
2000	72789784
2001	94138290.8
2002	186529971.8
2003	151146860.8
2004	326922583.5
2005	228321163.2
2006	137172355.5
2007	649104737.8
2008	101011993.2
2009	96001675
2010	96358523.9
2011	88545152.5
2012	93731823.8
2013	111057240.2
2014	74327322.7
2015	76991179.9
2016	84835163.3
2017	85989850.2
2018	85564954.5
2019	93681434.5
2020	75420093.9
2021	613222653.7
2022	71635536.4