Year constant 2021 international $ 1995 25486.386687921924 1996 26926.051395007264 1997 26897.682115536616 1998 27483.568306967016 1999 27741.20500506526 2000 28476.66796897492 2001 29656.091533127765 2002 30519.662407757907 2003 31750.595479623382 2004 33000.35800556276 2005 34678.94591901373 2006 35806.84690642018 2007 37743.27834209248 2008 38209.230265258906 2009 36303.45540157231 2010 36382.92471160811 2011 36331.85190060944 2012 36514.752567439115 2013 36816.76713180276 2014 37873.9134013429 2015 39904.47410893583 2016 41100.3572240267 2017 43188.11190809266 2018 44425.85798966017 2019 45413.830650538344 2020 43664.956971928266 2021 46442.067388332616 2022 45265.10984351533