Year	PPG (TDS, current US$)
1970	144710196.7
1971	161557801.6
1972	219979548
1973	206349305.3
1974	240378394.7
1975	262294021.3
1976	312159774.4
1977	364938173.7
1978	468651397.7
1979	716912400.7
1980	1052882991.9
1981	1729510716.1
1982	2293048606.3
1983	2310229297
1984	2263829475.2
1985	3552883092.4
1986	3398357984.6
1987	4635150456.3
1988	6163559092.5
1989	6107376067.2
1990	6507454324.8
1991	7011286662
1992	7464745051.9
1993	6911318518
1994	7654166678.7
1995	9112941572.1
1996	8375395709.7
1997	8702553783.9
1998	10544925496
1999	8513569727
2000	9735514971
2001	11512350344.2
2002	10070132778.1
2003	12457859324.9
2004	12149388355.3
2005	12594791696.4
2006	10737411860.8
2007	11867401344.8
2008	13072943367.8
2009	11429176668.9
2010	10720410626.8
2011	11291091978.7
2012	10484465024.6
2013	9624988699.7
2014	11750965448.9
2015	10930891032.9
2016	12940203640.3
2017	16736903757.8
2018	15734167982.7
2019	18476005068.1
2020	18219488850.4
2021	22050536751.3
2022	21396204998.4