Year	PPG (TDS, current US$)
1993	351957.6
1994	13113901.6
1995	56030665.2
1996	43421175.4
1997	29572006.8
1998	40180439.9
1999	17158797
2000	39605734.4
2001	50180833
2002	45913807.4
2003	27992908.4
2004	26286729.6
2005	28745271.1
2006	34574539.9
2007	40940338.4
2008	52752423.1
2009	57527894.2
2010	61338167.6
2011	84597184.8
2012	73285630.1
2013	78024850.8
2014	99562980.9
2015	117331274.8
2016	133045493
2017	132446914.4
2018	155429299.9
2019	177592885.1
2020	180768886.4
2021	157156880.7
2022	243789630.3