Year % GDP 1965 18.89322675197077 1966 18.552033736401977 1967 19.572257849525624 1968 20.066698950472134 1969 20.479093955399794 1970 20.58726131332393 1971 22.387868510608758 1972 21.540250364259247 1973 23.10111922501721 1974 21.82324856318638 1975 22.761957835786237 1976 20.807770651054383 1977 21.608652532259526 1978 22.880606058006162 1979 22.09985076315279 1980 23.39257085322605 1981 17.78867833633111 1982 18.42790124078347 1983 21.720265380007007 1984 22.60057298787495 1985 20.156070540169022 1986 22.084191044538123 1987 24.45119794228265 1988 25.265469192765053 1989 25.502209172532947 1990 24.513341520271588 1992 28.404682202367244 1993 26.629806488898605 1994 27.48049049134633 1995 25.839553972978752 1996 23.686007394665847 1997 24.142440368530284 1998 24.17000566309148 1999 31.20267531036117 2000 29.25507777799629 2001 29.832834730841824 2002 22.79043844024994 2003 26.700430293406658 2004 27.71300890938796 2005 27.794020408206784 2006 28.28910116696559 2007 30.53687047382628 2008 29.211334716855166 2009 31.104057270874073 2010 29.427429269450954 2011 27.95786817961707 2012 27.54649582218522 2013 26.13010373444776 2014 26.089695474342033 2015 27.36435678159692 2016 27.944663416284005 2017 28.09974063959257 2018 26.28736472575156 2019 26.02265251686669 2020 26.834750424027604 2021 26.92402377098212 2022 26.62337872523449