Year	PPG (TDS, current US$)
1970	252533018.5
1971	224008706.5
1972	255615749.7
1973	318503678.8
1974	404965085.1
1975	461605784.3
1976	311656614.3
1977	395276427.5
1978	405146793
1979	571461138.7
1980	619537281.9
1981	802255557.3
1982	912587375.1
1983	814930292.6
1984	964083596.7
1985	1354789950.6
1986	2276185392.9
1987	1992124268.6
1988	1912984721.2
1989	2128791560.7
1990	2715428316.5
1991	2339056402.8
1992	787175866.1
1993	14297000
1995	4000
2001	46478589.3
2002	93469327
2003	166826798.2
2004	218625279.6
2005	285384141.9
2006	542246266.3
2007	598739308.6
2008	535211174
2009	506043969.3
2010	671481199.2
2011	798014249.4
2012	1056394907.8
2013	1757083248
2014	1545359316.6
2015	1420900086.4
2016	1618161870.4
2017	2771402800.8
2018	3047842678.5
2019	3260265011.8
2020	2697528211.6
2021	2117430114.8
2022	1514682872.4