Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	0
1992	0
1993	0
1994	0
1995	0
1996	0
1997	0
1998	0
1999	0
2000	0
2001	0
2002	0
2003	0
2004	0
2005	23425.559600384
2006	38601.2975484078
2007	0
2008	0
2009	0
2010	0
2011	0
2012	70053.0965689347
2013	395187.684828138
2014	227150.244276539
2015	229299.605395349
2016	173530.775186534
2017	235387.857113411
2018	294630.708214813
2019	454083.983883907
2020	122328.077965982
2021	156063.797056492