Year Percent of GDP (Units) 1992 18.209 1993 11.469 1994 8.664 1995 18.044 1996 24.973 1997 21.454 1998 15.164 1999 17.758 2000 19.765 2001 17.778 2002 17.388 2003 11.630 2004 14.291 2005 16.213 2006 23.796 2007 26.249 2008 28.548 2009 26.884 2010 27.054 2011 25.165 2012 34.623 2013 33.542 2014 36.405 2015 34.285 2016 31.610 2017 30.720 2018 27.719 2019 24.946 2020 17.442 2021 23.393 2022 22.693 2023 23.318 2024 24.265 2025 25.116 2026 25.696 2027 26.380 2028 27.147 2029 27.949