Year	PPG (TDS, current US$)
1970	5077253845.199999
1971	4720110374.4000025
1972	5757742624
1973	8003079762.299996
1974	9183420269.500002
1975	10735787657.799997
1976	12614402666.700005
1977	17114889563.2
1978	26144596184.300007
1979	35850112516.1
1980	40222319437.200035
1981	47578804944.999985
1982	52417475454.9
1983	53363362305.99997
1984	56507306154.59999
1985	63439160250.4
1986	66302008656.59998
1987	68844058871.69997
1988	83637779841.29997
1989	81944946556.09998
1990	86045826654.9
1991	86750453716.19998
1992	97066242028.3
1993	94307821755.79997
1994	106272582850.99997
1995	131836514339.10002
1996	150058877068.69995
1997	153822714938.70004
1998	139728401157.9
1999	146630003331.90002
2000	157443421210.70004
2001	153182768362.69998
2002	152420270871.79993
2003	174035542042.49997
2004	162102498522.79996
2005	189241856657.19995
2006	227560870064.09998
2007	172464189218.2
2008	197752223626.69998
2009	164842125391.79996
2010	180921129300.50012
2011	183363183967.7
2012	180728493559.80002
2013	204915309382.30005
2014	250426270412.7
2015	298892918761.7001
2016	305595645142.7001
2017	308116486511.99994
2018	368632748854.5002
2019	383974292278.29974
2020	399000530342.6997
2021	407318916494.1
2022	414263389882.7002