Year Percent of GDP 1995 32.976 1996 31.955 1997 32.608 1998 36.814 1999 39.466 2000 35.865 2001 35.037 2002 33.169 2003 32.065 2004 33.196 2005 33.424 2006 33.734 2007 34.447 2008 37.037 2009 43.65 2010 41.209 2011 41.504 2012 35.216 2013 34.715 2014 34.027 2015 34.318 2016 33.333 2017 32.377 2018 33.116 2019 34.481 2020 34.454 2021 34.489 2022 34.482 2023 34.422 2024 34.383