Year Percent of GDP 1990 34.35 1991 36.14 1992 40.678 1993 45.688 1994 48.458 1995 51.501 1996 52.892 1997 55.218 1998 57.535 1999 54.149 2000 53.472 2001 52.415 2002 59.111 2003 58.21 2004 59.161 2005 56.097 2006 49.617 2007 45.464 2008 45.867 2009 44.072 2010 42.55 2011 42.873 2012 43.668 2013 42.915 2014 42.971 2015 43.007 2016 41.843 2017 41.812 2018 40.508 2019 39.486 2020 38.171 2021 36.948 2022 35.709 2023 34.551 2024 33.425