Year	PPG (TDS, current US$)
1970	44711008.1
1971	69121447.1
1972	190050025
1973	301617975.1
1974	711331756.1
1975	469065617.1
1976	787355802
1977	1062673080.8
1978	1517452105.3
1979	2816039955.2
1980	3968077201
1981	3912888296.5
1982	4379465817.3
1983	4587105713.8
1984	4976049503.7
1985	4874362397.6
1986	5130007337.4
1987	5390584443.2
1988	6278599597.2
1989	6859095054.7
1990	8567559514
1991	9013037787.5
1992	8897219803.8
1993	8689219623
1994	4856833678.5
1995	3988710799.6
1996	3989434277.5
1997	3962172418.8
1998	4582720784.4
1999	4748548109.4
2000	4271461974.4
2001	4147311295.1
2002	3753167766.7
2003	3824881075
2004	5103103560.9
2005	5082664547.1
2006	13196615630.3
2007	751141705.1
2008	1021892868.9
2009	462769077.3
2010	388279985.7
2011	472801450
2012	664533561.4
2013	299274432.3
2014	238448086.3
2015	187946611
2016	165886105.6
2017	166253005.3
2018	147483675.3
2019	115526920.5
2020	99331152.4
2021	122273016.6
2022	125293915.4