Year Percent of GDP (Units) 1995 84.143 1996 71.435 1997 62.329 1998 60.518 1999 60.403 2000 55.705 2001 52.253 2002 55.579 2003 58.110 2004 58.847 2005 60.518 2006 64.427 2007 65.550 2008 71.757 2009 78.032 2010 80.007 2011 80.338 2012 78.155 2013 77.198 2014 76.542 2015 75.760 2016 74.850 2017 72.114 2018 69.078 2019 65.333 2020 79.253 2021 76.669 2022 73.907 2023 73.403 2024 74.664 2025 73.431 2026 72.404 2027 71.177 2028 69.662 2029 68.237