Year current international $ 2000 1518.7148687806327 2001 1646.8352924267842 2002 1768.520125053009 2003 1873.4131807552594 2004 1985.9209918203665 2005 2104.741024837619 2006 2260.285096453569 2007 2384.9083269846997 2008 2534.2401616655434 2009 2687.4842795894624 2010 2787.9995037093927 2011 2929.8044145641115 2012 3011.3183385254797 2013 3132.07793861688 2014 3283.6087642426146 2015 3431.494396125291 2016 3564.7094481163713 2017 3689.059714662615 2018 3845.1874444434234 2019 4040.0778008506973 2020 4605.218617413378 2021 4784.596256559781