Year	US Dollars
1972	90000.00358
1983	29999.99933
1985	15050000.19073
1986	32279998.7793
1987	29729999.54224
1988	36970001.2207
1989	98699996.94824
1990	183529998.7793
1991	267329986.57227
1992	193000000
1993	219199996.94824
1994	191080001.83105
1995	229050003.05176
1996	237740005.49316
1997	233649993.89648
1998	259170013.42773
1999	257779998.7793
2000	240970001.2207
2001	177690002.44141
2002	206080001.83105
2003	194059997.55859
2004	210059997.55859
2005	133940002.44141
2006	172830001.83105
2007	233600006.10352
2008	209529998.7793
2009	338309997.55859
2010	277750000
2011	281269989.01367
2012	270100006.10352
2013	273489990.23438
2014	235500000
2015	155039993.28613
2016	185039993.28613
2017	200820007.32422
2018	161309997.55859
2019	148110000.61035
2020	180179992.67578
2021	173009994.50684