Year	PPG (TDS, current US$)
1970	57757804.7
1971	58768727.2
1972	62360202.3
1973	200767228
1974	163320098.8
1975	243339816.8
1976	371576536.7
1977	104031601.6
1978	97966660.8
1979	260303107.2
1980	502977021.2
1981	901445497.7
1982	1406438334.9
1983	1877675212
1984	3057491742.7
1985	3825665434
1986	1670752904.8
1987	914108447.1
1988	2054690888.8
1989	2063342334.5
1990	3285164233.7
1991	2856327131.1
1992	2360072768.9
1993	1428898007.2
1994	1809673345.8
1995	1747670393.8
1996	2152812518.2
1997	1361418564
1998	1275115636.3
1999	974367450.9
2000	1729267864.2
2001	2468039551.1
2002	1430090085.9
2003	1627895016.9
2004	1705135681.4
2005	8800306824.7
2006	6700510062.8
2007	1002007179.5
2008	427512564.4
2009	426303505.6
2010	306840267.7
2011	351584895.6
2012	251848162.5
2013	393046581.3
2014	264009952.9
2015	397181921.7
2016	354770627
2017	343981136.1
2018	1434311566.4
2019	1391022932.1
2020	1565836452.4
2021	2645681989.8
2022	2916454252