Year	PPG (TDS, current US$)
1970	705116726.2
1971	734402396.7
1972	864081543.8
1973	1091083206.7
1974	1201514384.8
1975	1595582013.5
1976	2243225976.3
1977	3570383747.8
1978	6320652970.4
1979	10043823992.3
1980	7910382958.9
1981	8559254589.5
1982	9434741231.8
1983	11448395712.4
1984	11299119274.8
1985	10594884830.9
1986	8628727785.1
1987	8656482861.7
1988	9934594243.8
1989	9513838243.4
1990	7863499725.7
1991	9279728892.6
1992	15322370706.3
1993	10603845926.4
1994	11778912835.3
1995	15487833817.6
1996	26756347380.8
1997	28302671879.9
1998	17622313122.9
1999	16065377631.9
2000	24799711661.9
2001	24453058842.8
2002	19433520040
2003	22052819386.9
2004	25138489807.8
2005	23230257279.2
2006	38814832589.6
2007	21477634322.8
2008	22043438043.1
2009	17891436782.1
2010	19800089082.1
2011	19701066496.6
2012	37216356347
2013	22466430550.4
2014	19278041319.2
2015	26184462074.1
2016	40791424242.6
2017	36346938241.5
2018	30949664314.5
2019	42292182220.3
2020	41963401342.8
2021	52018279654
2022	24523329302.4