Year current US$ 1993 3500000 1994 17000000 1995 11900000 1996 35600000 1997 25700000 1998 19900000 1999 4800000 2000 9600000 2001 33200000 2002 48800000 2003 28100000 2004 47100000 2005 52200000 2006 70400000 2007 103200000 2008 171000000 2009 133000000 2010 115700000 2011 133800000 2012 141700000 2013 150800000 2014 181200000 2015 162300000 2016 123800000 2017 137800000 2018 159900000 2019 185900000 2020 245200000 2021 240200939.05 2022 236105492.1 2023 211646316.53