Year	Percent of GDP
1970-01-01	13.9436471574494
1971-01-01	13.7258592348418
1972-01-01	13.4975662922761
1973-01-01	13.7223242125251
1974-01-01	15.7047292091838
1975-01-01	15.3430453512538
1976-01-01	16.9580192612650
1977-01-01	16.8691804370217
1978-01-01	16.4162454337005
1979-01-01	18.1692408569769
1980-01-01	19.8564762764685
1981-01-01	20.4948801429197
1982-01-01	20.0151261747016
1983-01-01	19.8173023644130
1984-01-01	21.1692649392177
1985-01-01	21.7382573868731
1986-01-01	18.3606113165103
1987-01-01	17.6391642436068
1988-01-01	17.8348707493102
1989-01-01	19.3057537928798
1990-01-01	19.6168836393816
1991-01-01	20.9773789146896
1992-01-01	19.1692349107257
1993-01-01	16.7018851236673
1994-01-01	17.3517919105432
1995-01-01	17.8692583680120
1996-01-01	18.3412275874018
1997-01-01	20.0840315925760
1998-01-01	20.9669880244549
1999-01-01	21.4217083508438
2000-01-01	25.3415273740049
2001-01-01	24.8655896374281
2002-01-01	23.4204004994012
2003-01-01	24.0229555579644
2004-01-01	25.2223868961520
2005-01-01	26.9869697000861
2006-01-01	30.0771609746209
2007-01-01	30.6086932190824
2008-01-01	31.4096413509482
2009-01-01	26.9252010780176
2010-01-01	30.6761055777595
2011-01-01	33.1799499505876
2012-01-01	32.5647824471210
2013-01-01	31.4169095220749
2014-01-01	30.8554339875347
2015-01-01	30.9671446011645
2016-01-01	30.0808756062411
2017-01-01	31.3927340475547