Year	current US$
1992	35681952.7935543
1993	38148389.1935804
1994	42646752.6420703
1995	51705359.0034818
1996	64754103.4943235
1997	66394272.6255652
1998	67059443.4388112
1999	62459416.8508326
2000	67568781.2999029
2001	71212951.8708562
2002	72889021.0444503
2003	83505013.667365
2004	106905945.171002
2005	95576737.7099
2006	101815507.779387
2007	111572364.380602
2008	126968072.680225
2009	168132762.190107
2010	149296693.045397
2011	198168933.064599