Year	PPG (TDS, current US$)
1993	844000
1997	33465000
1998	59362000
1999	17120076.6
2000	20759140.1
2001	32325249.1
2002	33323919.2
2003	38355484.8
2004	55931371.1
2005	45769278.5
2006	54548679.5
2007	47290234.5
2008	78130963.8
2009	58835273.9
2010	59967289.4
2011	62833916.1
2012	104416018
2013	128754712.7
2014	132213153.7
2015	126104060.6
2016	147402458.4
2017	149991568
2018	199994373.2
2019	204148430.5
2020	164550713.3
2021	221198284.2
2022	266832633.9