Year % of GDP 1985 3.96502995491028 1987 2.64112997055054 1989 2.19795989990234 1991 1.99845004081726 1992 2.30386996269226 1995 2.57641005516052 1998 4.02056980133057 1999 3.32266998291016 2000 4.74038982391357 2001 4.42154979705811 2002 3.92051005363464 2003 3.79099011421204 2004 3.9713499546051 2005 3.83144998550415 2006 4.05925989151001 2007 4.1938099861145 2010 2.94400000572205 2011 2.75099992752075 2012 3.18300008773804 2013 2.8199999332428 2014 2.83500003814697 2015 2.549880027771 2016 3.12400007247925 2017 3.15899991989136 2018 3.03399991989136 2019 2.98699998855591 2020 3.10400009155273 2021 2.7765998840332 2022 3.63100004196167