Year % of GDP 1975 13.297706680177804 1976 13.608293670312113 1977 14.203191236786717 1978 13.883789429475804 1979 13.629431389364905 1980 14.558814776908264 1981 16.99480403843061 1982 16.467544297156437 1983 15.883030014044836 1984 15.819626786414052 1985 16.407911641955582 1986 14.121741153456146 1987 13.846461821391243 1988 15.620541750462714 1989 16.197961558200515 1990 16.671122308012578 1991 17.73004227760915 1992 16.230185871040195 1993 16.082965136482358 1994 16.47520003913773 1995 15.862481152915722 1996 16.666945015347466 1997 16.002460957671495 1998 17.509592274261973 1999 21.567731304458803 2000 27.28088522847849 2001 28.675838289517742 2002 28.53399683593731 2003 27.477163869705322 2004 27.729835756208953 2005 31.10998718988855 2006 35.49978751448239 2007 37.549111281069145 2008 39.80134232013512 2009 35.10056053848968 2010 36.252040532248785 2011 37.66590769520223 2012 39.53185726416793 2013 39.467195577298725 2014 39.153780283248025 2015 40.517496597384515 2016 39.288960208945305 2017 40.74666203151221 2018 43.68583679008644 2019 46.17768294614351 2020 41.76742234226295 2021 44.84840335761816 2022 57.82612233733322 2023 54.72754097416781