Year	current US$
1996	142035000
1997	147994000
1998	155563000
1999	173688000
2000	183751000
2001	184618000
2002	188241000
2003	196994000
2004	216072000
2005	231305000
2010	278353000
2011	269837000
2012	249564000
2013	278188000
2014	254563000
2015	281929000
2016	290550000
2017	321956000
2018	321332000
2019	316479000
2020	260087000
2021	285251000
2022	305059000