Year	current US$
1968	839999.973773956
1969	730000.019073486
1970	1350000.02384186
1971	1159999.9666214
1972	860000.014305115
1973	400000.00596046395
1974	790000.021457672
1975	2460000.03814697
1976	1600000.02384186
1977	1190000.0572204601
1978	850000.023841858
1979	1519999.98092651
1980	1809999.9427795399
1981	2180000.0667572
1982	2279999.97138977
1983	1690000.0572204601
1984	1509999.9904632599
1985	1500000
1986	2170000.07629395
1987	1950000.04768372
1988	2690000.05722046
1989	2779999.97138977
1990	2200000.04768372
1991	2670000.07629395
1992	2519999.98092651
1993	4420000.07629395
1994	2359999.89509583
1995	-1590000.0333786
1996	29999.999329447703
1997	150000.005960464
1998	1830000.04291534
1999	1330000.04291534
2000	1340000.0333786
2001	-129999.995231628
2002	389999.98569488496
2003	389999.98569488496
2004	479999.989271164
2005	689999.997615814
2006	829999.983310699
2007	620000.004768372
2008	730000.019073486
2009	980000.019073486
2010	800000.011920929
2011	509999.99046325695
2012	854145.765304565
2013	641664.981842041
2014	518474.75767135597
2015	341946.989297867
2016	450367.54012107797
2017	378983.31880569505
2018	535545.349121094
2019	410010.01000404404
2020	433860.003948212
2021	513988.435268402
2022	761215.627193451