Year constant 2021 US$ 1990 3319112 1991 13193881 1992 7647738 1993 12006252 1994 10842746 1997 13212011 1998 11569426 1999 12043720 2000 14334627 2001 18460561 2002 21257044 2003 24727499 2004 26536366 2005 29571977 2006 46078295 2007 47069711 2008 59775226 2009 52025091 2010 40485509 2011 33159081 2012 35301847 2013 45105784 2014 44241930 2015 50348895 2016 66437475.00000001 2017 67663925 2018 72625938 2019 65161069 2020 65448363 2021 70840000 2022 94714456