Year	current US$
1992	6590000.15258789
1993	31090000.1525879
1994	26579999.9237061
1995	30700000.762939498
1996	23639999.3896484
1997	20819999.6948242
1998	27530000.6866455
1999	25350000.3814697
2000	35529998.779296905
2001	74930000.3051758
2002	44110000.6103516
2003	28840000.1525879
2004	54040000.9155273
2005	29049999.237060502
2006	41110000.6103516
2007	28770000.4577637
2008	18120000.8392334
2009	40639999.3896484
2010	43799999.237060495
2011	40819999.6948242
2012	37659999.8474121
2013	35909999.8474121
2014	34479999.5422363
2015	22950000.762939498
2016	32229999.5422363
2017	28139999.3896484
2018	20459999.084472697
2019	25329999.9237061
2020	34099998.4741211
2021	28709999.084472697
2022	15090000.1525879