Year Percent of GDP (Units) 1995 46.749 1996 48.828 1997 53.479 1998 54.986 1999 55.662 2000 55.978 2001 57.524 2002 61.010 2003 63.006 2004 64.687 2005 64.029 2006 59.031 2007 53.150 2008 44.126 2009 52.821 2010 55.340 2011 64.806 2012 79.152 2013 102.652 2014 108.758 2015 106.799 2016 102.607 2017 92.624 2018 101.141 2019 93.048 2020 114.929 2021 99.251 2022 85.595 2023 77.414 2024 70.704 2025 65.090 2026 59.979 2027 56.013 2028 52.793 2029 49.972