Year Percent of GDP (Units) 2000 56.944 2001 58.184 2002 62.955 2003 66.947 2004 59.421 2005 58.292 2006 55.307 2007 48.808 2008 48.759 2009 56.837 2010 54.392 2011 54.910 2012 54.329 2013 56.556 2014 59.193 2015 63.230 2016 63.046 2017 62.165 2018 64.044 2019 82.211 2020 94.705 2021 88.818 2022 84.204 2023 81.140 2024 80.952 2025 80.832 2026 80.557 2027 80.047 2028 79.629 2029 79.228