Year	current US$
1970	0
1971	0
1972	0
1973	0
1974	0
1975	102.312137444132
1976	0
1977	0
1978	0
1979	2955.78913771878
1980	4862.15815859587
1981	3030.18646571122
1982	4099.66657027114
1983	12127.8562890185
1984	8956.79127243188
1985	5749.9507641651
1986	8118.29799260223
1987	12855.6977032203
1988	11096.6602955602
1989	3624.47103421663
1990	3384.16684744193
1991	6626.46835929478
1992	0
1993	0
1994	0
1995	843035.076171552
1996	2718118.28032662
1997	1711817.47536277
1998	1399962.50090463
1999	915387.880456438
2000	1506121.59418425
2001	1399420.99141173
2002	2524945.70368532
2003	922813.323823718
2004	1305417.64906027
2005	2094925.46367043
2006	5830347.22294149
2007	6584871.97574795
2008	8303178.68627254
2009	12146253.6551593
2010	14547666.5072945
2011	25105936.7385083
2012	22161366.9689542
2013	15930349.0373973
2014	12198577.6770599
2015	11040755.1460776
2016	14193042.7637939
2017	11502856.4186189
2018	0
2019	0
2020	0
2021	0