Year % of GDP 1960 33.9684544444813 1961 19.566105635888466 1962 11.553752892805647 1963 15.148723633037841 1964 21.881877547663198 1965 27.81853200166274 1966 28.486058606909587 1967 24.041403169168323 1968 23.19195637489225 1969 26.52788324870901 1970 29.150595368320715 1971 30.35021177153577 1972 29.320284086540592 1973 30.430836830426806 1974 31.04308237702247 1975 31.298336069795045 1976 29.16383572545918 1977 30.974079637034475 1978 32.77757284132539 1979 33.520752164392434 1980 32.051910590820654 1981 29.342138902170973 1982 28.326358971122307 1983 30.42407326048286 1984 31.279957867333565 1985 31.468604318018546 1986 32.888642713873374 1987 36.50278320121099 1988 35.50991111646729 1989 32.57035724430524 1990 32.03491810498239 1991 33.253834228060256 1992 34.642061688938334 1993 36.66722731888988 1994 37.083094049487805 1995 36.70772529577029 1996 36.25884225632735 1997 36.76186584517364 1998 36.91667000332497 1999 34.406887079513744 2000 34.956068469781364 2001 35.67609295795755 2002 35.92169514144849 2003 38.03720524952564 2004 40.3968819655705 2005 41.430999741688076 2006 43.02223850680995 2007 44.423715366295546 2008 45.87073632126114 2009 45.80180888934462 2010 47.03542102553988 2011 46.313297310555015 2012 45.4169232968401 2013 45.005191196345415 2014 44.53652742145901 2015 43.30322603504161 2016 42.40246608338164 2017 42.72697143812111 2018 42.641680331811614 2019 41.64233154460478 2020 41.98482566000328 2021 43.63440496649408 2022 44.208821914772685