Year % of GDP 1961 2.70224719101124 1962 2.89130434782609 1963 2.64691358024691 1964 2.86877828054299 1965 2.51991150442478 1966 2.40803382663848 1967 2.40384615384615 1968 1.9908116385911199 1969 2.17551622418879 1970 2.22804718217562 1971 1.91616766467066 1972 2.3755656108597303 1973 2.65580890336591 1974 2.8659160696008197 1975 3.16602316602317 1976 2.91153415453527 1977 3.12958435207824 1978 3.21395775941231 1979 2.9661016949152503 1980 2.07929560652539 1981 1.96076196121795 1982 2.10679495672383 1983 1.98366008623087 1984 1.9726074138050502 1985 2.1424163258519298 1986 2.02676894054551 1987 2.11678611388309 1988 2.21346810206719 1989 2.11201131003608 1990 1.9564941828743398 1993 1.56379346508086 1994 1.43802626563637 1995 1.49701708229888 1996 1.42841059416252 1997 1.4968522377367102 1998 1.4046323108263399 1999 1.4922899278834298 2000 1.47864974445751 2001 1.29517222790027 2002 1.2688504314445501 2003 1.4193331132051001 2004 1.42199884362637 2005 1.3843120409343501 2006 1.39141541039687 2007 1.35503402826002 2008 1.46571486807421 2009 1.41866425479876 2010 1.3745668082010398 2011 1.2410333300729 2012 1.19640574526633 2013 1.16137913160626 2014 1.5159338319542102 2015 2.36017445199795 2016 2.5861308735712503 2017 3.02860111373814 2018 2.82359553728645 2019 2.7524705308083397 2020 3.4257337002298702 2021 3.43787625232372 2022 2.83404367131954