Year	PPG (TDS, current US$)
1995	150000
1997	504638.3
1998	3551219.6
1999	3264445.7
2000	2972741.2
2001	6065826.4
2002	8922404.2
2003	10880432.9
2004	18917391.8
2005	20215890.3
2006	12306121.2
2007	5726617.4
2008	15583389.7
2009	21552117.8
2010	26877435.9
2011	21958972.7
2012	93031000.4
2013	86182101.8
2014	44579415.6
2015	32570740
2016	26869915.8
2017	26918977.7
2018	27992644.3
2019	21023275.8
2020	20217859.2
2021	20565402.2
2022	16585583.1