Year	% of GDP
1993	62.9081953007863
1994	65.5852418859088
1995	66.0691469680361
1996	62.2500607696462
1997	61.9921071104928
1998	54.9781470180848
1999	50.6734073100587
2000	45.4498058958734
2001	41.8479513173843
2002	41.7154551461715
2003	46.0799635067404
2004	43.1828957525427
2005	41.56927052976
2006	46.754154380639
2007	51.4205686962142
2008	58.277430800347
2009	60.9169936258542
2010	62.720418406325
2011	68.245666878628
2012	68.3677626510131
2013	69.3125739361972
2014	72.5490746070334
2015	68.8534032176889
2016	66.8166250348679
2017	62.0608539235194
2018	62.8245562082429