Year	PPG (TDS, current US$)
1970	30589445.7
1971	32154995.7
1972	37791969.3
1973	47926341.9
1974	57016644.1
1975	70793561.6
1976	77258109.5
1977	98412825.8
1978	253007755.6
1979	270318441.2
1980	221743393
1981	214239569.9
1982	152313173.9
1983	629334127.7
1984	344863975.4
1985	475533611.9
1986	407844753.6
1987	203374759.6
1988	286222036.6
1989	285606061.2
1990	444730229.3
1991	352128192.6
1992	484835962.4
1993	454470495.1
1994	402419079.8
1995	545522644
1996	523760108.4
1997	512402770.5
1998	480910531.1
1999	488445962.3
2000	565603451.4
2001	625815271.8
2002	605651411.2
2003	738439081.2
2004	611598816.3
2005	470493531.1
2006	371212353.9
2007	381504160.7
2008	1094733465.4
2009	791565696.3
2010	554539698.9
2011	841049048
2012	944002955.6
2013	1379444031.1
2014	1142996964.8
2015	1141253200.1
2016	1044177589.8
2017	1122673046.6
2018	1584222393.4
2019	1747385978.4
2020	1621812510.7
2021	1490686283.9
2022	1157722015.2