Year	PPG (TDS, current US$)
1992	5000000
1993	1034000
1994	8595000
1995	58242357.6
1996	61854447
1997	87008885.1
1998	109924590.5
1999	99110586.5
2000	69766273.2
2001	75883382
2002	110840976.8
2003	66671629.9
2004	111459991
2005	64405482.1
2006	70440909.8
2007	60941196.2
2008	60328846.6
2009	77132187.4
2010	71378743.6
2011	87421891.4
2012	81791421.2
2013	100142660.2
2014	78345104.1
2015	55561555.8
2016	52237088.9
2017	69495738.3
2018	111251835.7
2019	124255838.4
2020	141432650.5
2021	160684383.7
2022	135621586.7