Year	PPG (TDS, current US$)
1970	62421616.4
1971	96015676.5
1972	112690686.3
1973	138565028.5
1974	147995296.4
1975	158726257
1976	210739621.7
1977	323596181.2
1978	612396760.1
1979	888484821.6
1980	1205021957.4
1981	1321020870.3
1982	1446234947.7
1983	1268495944.1
1984	774200208
1985	1052808521.7
1986	1247006237.7
1987	1249150350.4
1988	1342534215.5
1989	1686329388
1990	1463505106.6
1991	2128886646.8
1992	3681388130.7
1993	3085513631.4
1994	3454553519.7
1995	3598080895.9
1996	3254289450.4
1997	2946466019.6
1998	2699431159.2
1999	2953656140.2
2000	2470386715.6
2001	2490200088.3
2002	3020084555.2
2003	3762977404.4
2004	2608958339.2
2005	2388358085.6
2006	2036298189.1
2007	2421672174.6
2008	2455749488.7
2009	1749873017.9
2010	2093394369.7
2011	2197541724.5
2012	2338796105.2
2013	2904746333.9
2014	2763477901.3
2015	2550254500.1
2016	3029246150.8
2017	3321108690.7
2018	3069699985
2019	3060648838.6
2020	4294034827.5
2021	4516789152
2022	4662564942.7