Year constant 2010 US$ 2010 5861.9970274104 2011 6639.5443154652 2012 7656.55807157003 2013 7621.7890026181 2014 7851.8680982779 2015 7803.20993222607 2016 8244.03043730048 2017 8400.51308223086 2018 8711.97666498725