Year	current US$
1989	4259452.82
1990	7504440.784
1991	7320125.103
1992	10761208.53
1993	289489.5971
1994	296685.5168
1995	503992.56610965
1996	704227.71370796
1997	218847.040839842
1998	114020.932342829
1999	187175.367721608
2000	3159009.30201354
2001	1790853.67154878
2002	1979914.9640209
2003	4855111.37811764
2004	6808310.1604278
2005	12101090.9090909
2006	13269559.8869849
2007	4768023.42779726
2008	3161817.72236295
2009	16123483.2926724
2010	17376950.5214324
2011	25261929.1491792
2012	17669070.0559239
2013	12874328.2478163
2014	15075955.04
2015	18424230.9296372
2016	22087023.3470993
2017	21661247.9309142
2018	22713694.6426079
2019	23648219.3078321
2020	9979686.56744174
2021	9512244.92618821
2022	10040263.1409193
2023	10565240.8599853