Year	% of GDP
1990	66.2319787884172
1991	80.699254458942
1992	69.2390614150626
1993	63.5138868125002
1994	63.6515408279566
1995	65.5888347943486
1996	63.4584521363686
1997	61.8244354789831
1998	62.1120778072269
1999	56.2121207299917
2000	50.366330523554
2001	52.9119420977
2002	58.8155818558539
2003	60.659149207268
2004	58.1812121107671
2005	57.9176563177063
2006	57.4755496785221
2007	56.5890697009773
2008	53.7124670008656
2010	62.2273904793662
2011	58.669733629162
2012	61.8779767846222
2013	63.6604587678102
2014	64.3385250314932
2015	65.9627331638775
2016	69.9781608656963