Year current US$ 1988 239999.994635582 1989 250000 1990 289999.99165535 1991 389999.98569488496 1992 889999.985694885 1993 259999.990463257 1994 649999.976158142 1995 589999.973773956 1996 389999.98569488496 1997 239999.994635582 1998 560000.002384186 1999 610000.014305115 2000 219999.998807907 2001 449999.988079071 2002 370000.00476837205 2003 330000.013113022 2004 340000.00357627904 2005 310000.002384186 2006 300000.011920929 2007 349999.99403953605 2008 540000.021457672 2009 519999.980926514 2010 560000.002384186 2011 610000.014305115 2012 662370.026111603 2013 546625.018119812 2014 490196.04921340896 2015 460294.60430145304 2016 490424.901247025 2017 502956.15196228004 2018 546609.997749329 2019 783304.691314697 2020 941980.004310608 2021 905903.398990631 2022 772170.007228851