Year	% of GDP
1972-01-01	22.32740401797720
1973-01-01	17.13963990376590
1974-01-01	11.51845607235030
1975-01-01	10.98718772368600
1976-01-01	19.97060846024860
1977-01-01	14.37463952611640
1978-01-01	3.61941257283848
1979-01-01	-8.06118141861512
1980-01-01	-10.58531647530100
1981-01-01	-15.79862080941180
1982-01-01	-14.25596709717600
1983-01-01	-20.63987514417480
1984-01-01	-13.78015790589520
1985-01-01	-12.70991580053280
1986-01-01	-8.57165548674772
1987-01-01	8.51053526205584
1988-01-01	12.16282870839450
1989-01-01	15.72822980527480
1990-01-01	31.33304482654930
1991-01-01	-3.22232474015461
1992-01-01	-34.35501424164300
1993-01-01	-125.84537207643800
1994-01-01	-107.28098457360000
1995-01-01	-240.17519917039800
1996-01-01	-105.80639484827100
1997-01-01	-46.76547919810710
1998-01-01	28.77660292974600
1999-01-01	37.75335387515100
2000-01-01	114.74967546305700
2001-01-01	87.05441124119880
2002-01-01	-33.75327115924030
2003-01-01	-35.08900052456110
2004-01-01	6.00970566529536
2005-01-01	40.29482136059730
2006-01-01	51.81218033147520
2007-01-01	81.84150890499610
2008-01-01	50.17888584432710
2009-01-01	-30.10831397371340
2010-01-01	-5.59645800705828
2011-01-01	7.26522600738610
2012-01-01	-10.25758436936540
2013-01-01	-7.55657497302986
2014-01-01	-3.74304623118938