Year	PPG (TDS, current US$)
1970	247582403.1
1971	270163645
1972	358748095.3
1973	563837466.7
1974	613437936.5
1975	903419606.5
1976	1184880676.6999998
1977	1783595073.1999998
1978	2981470305.6
1979	3377458328.5000005
1980	3000676531.9000006
1981	5504038437.1
1982	6187878641.599999
1983	6877256774.400001
1984	7878724307.6
1985	8962908353.199999
1986	11411018903.7
1987	13436084803.600004
1988	16573285254.399998
1989	17906962253.3
1990	19994576114.7
1991	19804325256.2
1992	22600221686.199997
1993	25439309346.500004
1994	26163648907.899998
1995	31232524689.9
1996	33718475934.999996
1997	32323367085.199993
1998	27156565603.600002
1999	33822528537.4
2000	32573514753.7
2001	32012713188.4
2002	34120792269.700005
2003	35730879526.7
2004	31137932118.199993
2005	27069242430
2006	30735025745.6
2007	28084256143.3
2008	29855738072.2
2009	28124898045.199997
2010	37975356654.399994
2011	35624819797.2
2012	30810721865.79999
2013	37352133710
2014	55197218009.299995
2015	60866832755.6
2016	47158276547.8
2017	48725172732.5
2018	52344574369.200005
2019	66443165639.10001
2020	83413073917.90001
2021	105936950176.90001
2022	123761445026