Year	PPG (TDS, current US$)
1970	30481000
1971	40350000
1972	52016000
1973	87024000
1974	135557000
1975	72370000
1976	100531000
1977	161442000
1978	564852000
1979	387920021.1
1980	466397409
1981	494242620.2
1982	618511271.7
1983	480272033.4
1984	536948711.7
1985	406939915.7
1986	440871773
1987	354715776.9
1988	27762157.1
1989	12576097.5
1990	141421326.9
1991	181451709.4
1992	632450371.7
1993	215447656.2
1994	303785468.5
1995	234568623.3
1996	802924342.2
1997	1494295017.5
1998	565614271.4
1999	596940903.8
2000	751789259.2
2001	976743984
2002	1387873563.1
2003	762341618.6
2004	1060742699.2
2005	1682683847.3
2006	2275703208.5
2007	771115622.9
2008	1536582969.9
2009	817814784.1
2010	840205968.8
2011	1211382926.9
2012	1614080855.2
2013	1433322441
2014	905168229.4
2015	1482931839.5
2016	1258641821.5
2017	1811055570.1
2018	1391869871
2019	1537980310.7
2020	2841431815.4
2021	2044134126
2022	1701355183