Year Percent of GDP (Units) 1992 59.818 1993 54.223 1994 36.701 1995 24.877 1996 24.245 1997 23.814 1998 25.873 1999 22.884 2000 25.460 2001 23.282 2002 21.660 2003 23.178 2004 26.359 2005 30.826 2006 32.748 2007 38.106 2008 39.228 2009 23.142 2010 23.601 2011 24.049 2012 24.199 2013 24.938 2014 26.219 2015 23.595 2016 21.982 2017 21.939 2018 26.592 2019 25.104 2020 22.707 2021 25.755 2022 24.557 2023 22.852 2024 22.470 2025 22.517 2026 22.623 2027 22.826 2028 22.781 2029 22.630