Year	PPG (TDS, current US$)
1970	15265808.6
1971	19834637.7
1972	29469707.9
1973	38692373
1974	65288176.5
1975	82059750.9
1976	113256798.1
1977	158565175.2
1978	203525086.5
1979	207818948.5
1980	208001992.3
1981	238564050.1
1982	243577942.2
1983	270949842.4
1984	274582291.7
1985	355908468.7
1986	475750292.3
1987	435724031.7
1988	449107692.6
1989	408298546.8
1990	484017150.1
1991	550151753.8
1992	553693330.4
1993	422503794.6
1994	460443273.6
1995	518528786
1996	537105938.6
1997	539242633.8
1998	414887100.5
1999	520894356.5
2000	558060398.5
2001	672280934.8
2002	796101881.9
2003	799164256
2004	808152777.6
2005	904537479.2
2006	734078542.5
2007	1047416199.7
2008	948823263.6
2009	1249764383.8
2010	825457032.2
2011	1217963635.6
2012	1097474229.8
2013	773707090.3
2014	922174399.5
2015	1133753806
2016	1744548583.1
2017	1241452138.3
2018	1046936339.1
2019	1961942770.8
2020	1073526109.4
2021	1042692616.2
2022	1084233179.5