Year current international $ 2009 35658.73793172012 2010 37446.09154142486 2011 40719.20577136927 2012 35913.24934313911 2013 35434.00762877165 2014 42344.54245298834 2015 43032.624030509214 2016 43990.57480052947 2017 44918.157566044014 2018 42485.537422328794 2019 46565.48692096701 2020 39535.86540444369 2021 41365.80751406971 2022 48403.63887275356 2023 51527.1041702907