Year	Percent of GDP
1980-01-01	16.577
1981-01-01	20.017
1982-01-01	25.141
1983-01-01	30.378
1984-01-01	37.075
1985-01-01	42.059
1986-01-01	43.301
1987-01-01	43.139
1988-01-01	39.626
1989-01-01	41.033
1990-01-01	42.510
1991-01-01	43.086
1992-01-01	45.421
1993-01-01	56.160
1994-01-01	58.683
1995-01-01	63.384
1996-01-01	67.526
1997-01-01	66.206
1998-01-01	64.212
1999-01-01	62.459
2000-01-01	57.959
2001-01-01	54.163
2002-01-01	51.268
2003-01-01	47.640
2004-01-01	45.261
2005-01-01	42.284
2006-01-01	38.907
2007-01-01	35.510
2008-01-01	39.398
2009-01-01	52.704
2010-01-01	60.065
2011-01-01	69.460
2012-01-01	85.737
2013-01-01	95.451
2014-01-01	100.367
2015-01-01	99.439
2016-01-01	98.988
2017-01-01	98.364