Year	PPG (TDS, current US$)
1981	2359.7
1982	3312.8
1983	6414.8
1984	32808.6
1985	28547.2
1986	153340.4
1987	515456.5
1988	1312033.6
1989	6363755.4
1990	4984460.3
1991	7167215.6
1992	5852385.8
1993	7024086
1994	7528089.8
1995	9802440.4
1996	6914506.6
1997	7102999.1
1998	9175546.3
1999	6919581.8
2000	6542816.9
2001	6265903.2
2002	6448655.7
2003	7147851.7
2004	11911058.1
2005	6629166.3
2006	9305172.1
2007	30821016.2
2008	81494933
2009	75494680.6
2010	87390808.9
2011	85284589.7
2012	135571289.2
2013	78873973
2014	80308546
2015	127392656
2016	75836845.9
2017	75533552
2018	84812570.4
2019	54330012.6
2020	46759383.5
2021	116184819
2022	115695986.3