Year	PPG (TDS, current US$)
1970	101130334.3
1971	97283883.5
1972	139432904.8
1973	238958914.9
1974	199102313.7
1975	236164745.1
1976	256136427.4
1977	318001626.6
1978	618711066.1
1979	783724810.7
1980	596241125.7
1981	865586350.9
1982	1041311253
1983	1200365270.1
1984	1152456469.2
1985	1236183530.9
1986	1865547180.3
1987	2334772773.5
1988	2571238642
1989	2222153511.7
1990	2896463677.5
1991	2757969816.4
1992	3790680280
1993	4254544712.4
1994	3634058333.8
1995	4293780603.7
1996	4038951002.9
1997	3280058304.2
1998	3602051658.7
1999	4260196610.1
2000	4396663470.3
2001	5471123496.9
2002	5524742068.3
2003	5640871630.6
2004	6846471132.1
2005	5762213577.7
2006	8477626004.1
2007	5076737962.1
2008	6457205091.9
2009	6681956406
2010	9790158425.8
2011	7737211775.5
2012	5477916417.4
2013	5457578513.1
2014	5150458682.6
2015	5584237425.1
2016	6510364027.2
2017	5264401242.3
2018	4682281514.6
2019	6525794572.6
2020	5652127911.9
2021	7755932711.4
2022	5507618961.5