Year % GDP 1976 26.683942619157797 1977 22.388015299617507 1978 20.294203961848865 1979 23.297101449275363 1980 19.530083439882894 1981 23.15061127454534 1982 29.54343073082831 1983 30.494288633881606 1984 27.087635066972204 1985 28.326956272066422 1986 25.85194015467394 1987 26.078281188632857 1988 30.920510165070166 1989 31.299618623296194 1990 24.588574770666796 1991 27.824833992727438 1992 26.81628471908936 1993 25.73222283520755 1994 26.328152945438514 1995 26.726422487820017 1996 28.178968761206217 1997 31.005403191640784 1998 32.95674824174496 1999 32.15642691332021 2000 29.94954617534965 2001 33.00280522334704 2002 35.648449587080115 2003 38.774093396280875 2004 40.34067219154981 2005 40.274571986750416 2006 42.39112544073198 2007 45.7370282157185 2008 49.59296624456842 2009 53.08101349872033 2010 50.118805416048 2011 47.95549651189627 2012 46.91013535031643 2013 45.16847894095131 2014 44.970332161595664 2015 45.857462058270436 2016 44.71555098652126 2017 44.36390341986157 2018 45.1949773349891 2019 45.85471945158028 2020 55.06632151285192 2021 47.69700785155814 2022 42.72840808481838 2023 39.103782332317536