Year	PPG (TDS, current US$)
1970	143681084.3
1971	150020031.6
1972	168844911.6
1973	221755681.2
1974	311115630.8
1975	252649590.7
1976	286278659.6
1977	332852172
1978	406080434.3
1979	655430694.3
1980	550351858.6
1981	696942397.4
1982	900102955.6
1983	937630266.3
1984	1115143120.1
1985	1423024476.7
1986	1833479630.4
1987	2374443039.4
1988	2799704505.6
1989	2934400254.3
1990	3116020384.2
1991	3113664797.3
1992	3455842211.1
1993	2812063787.7
1994	3317527681.4
1995	3186366698.9
1996	2886643964.2
1997	2746708265.5
1998	2917543051.6
1999	4797778953.1
2000	3517207499
2001	4433822045.6
2002	4897194367.2
2003	5555794742.8
2004	3735277474.2
2005	6699750417.4
2006	5118044706.4
2007	4806600322.5
2008	4310694648.7
2009	3784572012.1
2010	4439643161.5
2011	4432212513.6
2012	5051131623
2013	4294460393.2
2014	5331412628.4
2015	4857525625.2
2016	5842606870.4
2017	10179066474.5
2018	10335211174.5
2019	8475122146.4
2020	7075427240.4
2021	13349626537.5
2022	8798353787.8