Year Percent of GDP (Units) 1993 26.455 1994 19.485 1995 20.299 1996 19.815 1997 21.666 1998 21.912 1999 21.682 2000 23.065 2001 22.482 2002 21.874 2003 22.329 2004 22.733 2005 24.678 2006 24.905 2007 25.149 2008 22.978 2009 23.560 2010 23.373 2011 26.883 2012 27.459 2013 27.521 2014 27.866 2015 26.868 2016 26.434 2017 28.727 2018 28.905 2019 28.994 2020 27.798 2021 28.454 2022 27.481 2023 25.018 2024 21.735 2025 22.392 2026 22.773 2027 22.887 2028 22.875 2029 22.803