Year Percent of GDP (Units) 1995 42.681 1996 45.908 1997 43.202 1998 43.688 1999 60.893 2000 46.562 2001 72.155 2002 65.404 2003 57.696 2004 51.085 2005 43.396 2006 37.102 2007 31.597 2008 32.067 2009 37.173 2010 34.667 2011 30.878 2012 27.265 2013 25.753 2014 23.707 2015 22.841 2016 23.275 2017 22.115 2018 24.003 2019 25.464 2020 30.163 2021 33.764 2022 23.405 2023 22.836 2024 25.460 2025 25.926 2026 27.035 2027 28.142 2028 29.130 2029 29.749