Year constant 2015 US$ 2006 4656.2987118791625 2007 5198.398512497294 2008 5768.031800734883 2009 4935.670574751906 2010 5024.978514691025 2011 5042.948395663732 2012 4841.943696489166 2013 4914.060152170479 2014 5049.645599526097 2015 5159.126174375835 2016 5434.484145698093 2017 5647.704622231904 2018 5908.352001698937 2019 6091.2436680271785 2020 5815.0124021087195 2021 6070.9696741516 2022 6682.484926666625 2023 7052.6755674754695