Year	% of GDP
1965	60.34712950600801
1966	59.01639344262295
1967	52.40825688073395
1968	53.62776025236593
1969	53.69059656218403
1970	47.8125304491864
1971	57.06324772494193
1972	57.240437158469945
1973	59.273112648837355
1974	77.89404610265004
1975	67.18382657918478
1976	61.92150428418886
1977	51.89198894448723
1978	50.90636212273996
1979	62.80446541724803
1980	57.971838057826176
1981	47.64951909159956
1982	27.334477643850995
1983	34.563175858343705
1984	36.49598240031601
1985	29.784460010480718
1986	20.283843159443514
1987	32.961356675762175
1988	20.320446551660197
1989	23.333663544676153
1990	4.492010853180585
1991	-69.23445808787967
1992	6.120317409760278
1993	20.67134363245388
1994	24.68157146402052
1995	25.148202467370805
1996	28.203115885927605
1997	26.901061183703174
1998	11.216088028837033
1999	21.055214456307187
2000	36.991262110749076
2001	30.07102803738318
2002	25.134598792062125
2003	34.26040148031849
2004	42.722088064532706
2005	52.13663258905108
2006	57.53609664229118
2007	55.55422552070864
2008	58.46546423757818
2009	48.0220486486841
2010	53.977592342055715
2011	60.86690989385721
2012	61.28726963016792
2013	58.46810677764254
2014	53.26407479576345
2015	34.25896511427415
2016	29.065710230301033
2017	32.28342340177293
2018	37.18319178138506
2019	34.62445562450706