Year	PPG (TDS, current US$)
1970	261283055.5
1971	213159281
1972	314712244.1
1973	430851400
1974	288231792.6
1975	272018220.3
1976	242180124
1977	448553821.1
1978	514226953.7
1979	401606671.2
1980	623482560.7
1981	972294023.6
1982	1068673431.1
1983	1362482513.2
1984	1598710442.7
1985	2098586332.8
1986	2042833703.8
1987	1057600961.7
1988	1862680898.5
1989	2293603320.2
1990	2489898237.2
1991	2041766835.2
1992	2146921222.2
1993	1865067065.3
1994	1843970190.4
1995	2059296435.1
1996	1907916653.5
1997	1754068258.1
1998	1631218192
1999	1639544400.1
2000	1588537239.3
2001	1668190193.4
2002	1881802487
2003	2297416858.6
2004	1967629191.4
2005	2193849657
2006	2363333487.3
2007	2711138749.5
2008	3164496904.3
2009	2841465294.2
2010	2907842881.1
2011	3555022432
2012	2954101170.9
2013	3296388294.7
2014	5853124288.3
2015	3576366522.6
2016	6130732288.4
2017	6150118592.3
2018	7902497221.3
2019	8110274762.7
2020	11444597049.3
2021	16677076821.9
2022	14657588033.3