Year Percent of GDP (Units) 1994 58.456 1995 52.263 1996 52.467 1997 52.713 1998 53.648 1999 60.596 2000 61.673 2001 65.148 2002 60.531 2003 56.326 2004 50.609 2005 47.878 2006 46.189 2007 43.854 2008 49.114 2009 53.361 2010 55.259 2011 55.065 2012 57.281 2013 58.258 2014 57.817 2015 57.886 2016 60.809 2017 60.856 2018 64.820 2019 77.505 2020 79.559 2021 73.508 2022 76.179 2023 77.113 2024 71.803 2025 69.616 2026 68.412 2027 66.815 2028 64.845 2029 63.077