Year current international $ 1990 12770 1991 13430 1992 13920 1993 14630 1994 15810 1995 17310 1996 18820 1997 20450 1998 22480 1999 23590 2000 26340 2001 27830 2002 29530 2003 31280 2004 33430 2005 35050 2006 38790 2007 40450 2008 38230 2009 34640 2010 36320 2011 36730 2012 37410 2013 40400 2014 43360 2015 53310 2016 58210 2017 62200 2018 65900 2019 70620 2020 73470 2021 85210 2022 96100 2023 98650