Year Percent of GDP (Units) 1992 55.289 1993 37.919 1994 28.260 1995 19.006 1996 12.922 1997 9.556 1998 6.145 1999 17.090 2000 17.990 2001 21.474 2002 20.469 2003 16.607 2004 24.584 2005 23.269 2006 21.411 2007 22.858 2008 23.116 2009 14.219 2010 16.700 2011 13.927 2012 16.807 2013 19.775 2014 20.243 2015 17.604 2016 18.409 2017 16.102 2018 15.822 2019 15.682 2020 15.017 2021 13.347 2022 8.781 2023 10.071 2024 10.986 2025 12.190 2026 13.178 2027 13.411 2028 13.627 2029 14.258