Year	current US$
1995	42328725.2057179
1996	40277281.215015
1997	39770541.7332068
1998	45248857.3639392
1999	39749901.3290997
2000	30734502.0832991
2001	32267386.5941089
2002	33468262.6581635
2003	39259211.097552
2004	46902625.661813
2005	45282905.3784155
2006	47142266.0879229
2007	52567165.2718608
2008	50463143.710558
2009	51578105.7412578
2010	47172087.156635
2011	43068309.546429
2012	36955049.9587043
2013	37785154.6750959
2014	36882485.6267569
2015	28293776.8391325
2016	25168317.3781245
2017	28414833.1781638
2018	33437497.7736754
2019	30520563.3688335
2020	32052643.1612484
2021	34677271.7835689