Year constant 2021 international $ 2010 4624.09728149514 2011 4619.638788243022 2012 4929.945532626887 2013 5208.4911580954995 2014 5390.566674524567 2015 5496.936867587085 2016 5539.094963605585 2017 5707.478922469967 2018 5908.042911949301 2019 5715.0324017891835 2020 5500.532152047465 2021 5412.229415253123 2022 5822.80716981954