Year current international $ 2000 2516.3129113744 2001 2685.14140824879 2002 2876.4599113533 2003 2858.2322720388 2004 2973.37635621873 2005 3135.55589858982 2006 3392.74952199381 2007 3540.80954957307 2008 3706.47566857834 2009 3936.05305869012 2010 4053.09178819785 2011 4211.18923584479 2012 4281.72559431568 2013 4531.50037598014 2014 4642.59699222994 2015 4682.91984248056 2016 4930.0436598678 2017 5069.78688558068 2018 5226.19721002876 2019 5617.51648515809 2020 5860.99512123534 2021 6330.46696072828