Year	PPG (TDS, current US$)
1970	3795467.9
1971	4761429.1
1972	6394070.7
1973	7983341.2
1974	10860555.5
1975	19719388.7
1976	23807001.2
1977	33525279.9
1978	50231675.2
1979	63427397.6
1980	73735327.9
1981	80223138.5
1982	88083289.5
1983	92211376
1984	70844947.6
1985	136325593.8
1986	97964409.1
1987	116906418.6
1988	126434532.5
1989	155523598.5
1990	136474943
1991	172946897.6
1992	222986433.6
1993	200149624.4
1994	162685829.3
1995	201973343.3
1996	239198344.4
1997	125286338.2
1998	186521082.8
1999	182550951.4
2000	145125453.2
2001	131196711.9
2002	91743148.4
2003	73188908.7
2004	86395172.8
2005	70630699.7
2006	72053000.3
2007	42150030.6
2008	34813137.7
2009	54246453.9
2010	85418747.2
2011	77056414.4
2012	88964707.3
2013	213206940.6
2014	192765518.7
2015	345780754.6
2016	617387459.9
2017	702130163.2
2018	920285612.8
2019	1138948827.6
2020	1199265472.5
2021	1539219495.9
2022	1545180285.3