Year current US$ 1988 29999.999329447703 1989 9999.99977648258 1991 239999.994635582 1992 219999.998807907 1993 540000.021457672 1994 310000.002384186 1995 389999.98569488496 1996 639999.985694885 1997 600000.023841858 1998 970000.028610229 1999 479999.989271164 2000 1799999.95231628 2001 750000 2002 980000.019073486 2003 2089999.9141693101 2004 3059999.94277954 2005 2839999.91416931 2006 4489999.771118159 2007 10220000.2670288 2008 8729999.54223633 2009 6989999.771118159 2010 6400000.09536743 2011 6789999.96185303 2012 9250000 2013 9600000.38146973 2014 9310000.4196167 2015 9890000.34332275 2016 10000000 2017 13020000.4577637 2018 18420000.0762939 2019 15380000.1144409 2020 9449999.80926514 2021 11960000.038146999 2022 10090000.1525879