Year Percent of GDP (Units) 2005 63.083 2006 67.744 2007 70.504 2008 67.309 2009 57.649 2010 33.454 2011 33.809 2012 34.342 2013 41.071 2014 44.859 2015 52.247 2016 59.755 2017 56.680 2018 57.676 2019 54.057 2020 62.211 2021 64.863 2022 66.520 2023 67.163 2024 68.255 2025 66.459 2026 64.712 2027 63.077 2028 61.564 2029 59.776