Year	% of GDP
2001	135.608746510151
2002	135.815101713848
2003	139.340723071058
2004	138.160951582291
2005	141.973127581258
2006	152.990054690047
2007	162.963310225322
2008	175.741858525864
2009	192.272145982241
2010	205.940302988812
2011	204.786290393857
2012	201.248270399271
2013	188.55421916362
2014	173.734482199478
2015	166.640656668576
2016	158.507231409474
2017	152.885617894499
2018	149.622657597646