Year current US$ 1991 940000.0013411042 1992 649999.9985098836 1993 799999.9914318325 1994 689999.9994784592 1995 730000.0004470344 1996 619999.9973177909 1997 1339999.9924004076 1998 209999.99530613425 1999 299999.9970197674 2000 289999.99724328535 2001 199999.99739229676 2002 1880000.02130866 2003 439999.99202787894 2004 409999.99828636664 2005 889999.991282821 2006 1239999.9853223558 2007 2789999.995380639 2008 1470000.032335519 2009 1290000.0102817982 2010 319999.9965727335 2011 209999.99716877984 2012 2210000.0027567134 2013 3069999.9593198257 2014 1480000.0078976145 2015 1509999.9979138365 2016 999999.9999999997 2017 800000.0063329936 2018 550000.0081956389 2019 729999.9967217448 2020 1429999.9736249445 2021 2000000.022351741 2022 2310000.0508129625