Year	current US$
1997	270000.010728836
1998	200000.00298023198
1999	230000.004172325
2000	660000.026226044
2001	870000.004768372
2002	1299999.95231628
2003	910000.026226044
2004	1379999.99523163
2005	860000.014305115
2006	839999.973773956
2007	639999.985694885
2008	970000.028610229
2009	569999.992847443
2010	460000.00834465
2013	1672381.04343414
2015	221208.75120163
2016	494418.68066787696
2017	1389009.95254517
2020	1588055.25302887
2021	187150.001525879