Year Percent of GDP 1960-01-01 3.60742514975139 1961-01-01 3.59895385230252 1962-01-01 3.48163287384150 1963-01-01 3.51187680610844 1964-01-01 3.74083995927740 1965-01-01 3.57110287668966 1966-01-01 3.60852353698208 1967-01-01 3.60711605246855 1968-01-01 3.62369742899349 1969-01-01 3.65966960972940 1970-01-01 3.98095159956070 1971-01-01 3.74657796171886 1972-01-01 3.84528867325688 1973-01-01 4.96127126600359 1974-01-01 6.33577094248502 1975-01-01 6.39488503036195 1976-01-01 6.14864290369674 1977-01-01 5.82755577600003 1978-01-01 6.08842168617022 1979-01-01 6.90386831336294 1980-01-01 7.72368188793374 1981-01-01 7.28555165231629 1982-01-01 6.35514204612586 1983-01-01 5.52575294168528 1984-01-01 5.39031636248168 1985-01-01 4.91884617863080 1986-01-01 4.96010515283603 1987-01-01 5.22867958255026 1988-01-01 6.15483803012717 1989-01-01 6.44842750322050 1990-01-01 6.60397719616466 1991-01-01 6.85077800068081 1992-01-01 6.87355946285771 1993-01-01 6.78047789960950 1994-01-01 7.03125640945499 1995-01-01 7.65265890440641 1996-01-01 7.74274013658628 1997-01-01 8.03402299711638 1998-01-01 7.52903902113478 1999-01-01 7.22274541949869 2000-01-01 7.62574556497180 2001-01-01 6.89266800372786 2002-01-01 6.33730796088676 2003-01-01 6.32415431456237 2004-01-01 6.67088421380982 2005-01-01 6.91100459201151 2006-01-01 7.42499797292847 2007-01-01 7.94250990849795 2008-01-01 8.74688010461328 2009-01-01 7.30622848459855 2010-01-01 8.52417921983102 2011-01-01 9.53694390698578 2012-01-01 9.54348013766391 2013-01-01 9.40386870728657 2014-01-01 9.25375976029615 2015-01-01 8.25164542009529 2016-01-01 7.75579623465449 2017-01-01 7.93485200581424