Year	PPG (TDS, current US$)
1970	442116130.1
1971	467024145.59999996
1972	732908716.2
1973	988359711.1999999
1974	1272267442.6000001
1975	1040606176.5
1976	1394334607.1
1977	2057372952.2000003
1978	2961580226
1979	4579903041.5
1980	7431235374.6
1981	7885315025.099999
1982	8434021506
1983	8890264200.6
1984	8958376369.099998
1985	9736319236.600002
1986	10326905908.400002
1987	9910544676.599998
1988	12063675137.2
1989	12770856799.499998
1990	14701923775.699999
1991	15378182812.499998
1992	17064780729
1993	16124633624.1
1994	14841362967
1995	17039640811.699999
1996	17894578731.899998
1997	17466863771
1998	13987563395.599997
1999	15388450357.3
2000	14755528510.2
2001	12551096638.9
2002	13702816648.999998
2003	17049838968.899998
2004	18219838907.699997
2005	17327792852.100002
2006	26761661129.6
2007	15553792395.800001
2008	18802441026.1
2009	15142423280.299997
2010	14403104166.200003
2011	16920549546.200003
2012	13414566864.800001
2013	13235356768.699999
2014	16590907882.099998
2015	15979178188.3
2016	20641754323
2017	19543663501.5
2018	20961576797.499996
2019	23160430984.199997
2020	23901735953.5
2021	31093555452.9
2022	30574894923.600002