Year	% of GDP
1970	34.8918112884012
1971	37.5826096988273
1972	42.9460171083606
1973	48.5285382564292
1974	71.1707715004379
1975	62.762224371285
1976	64.4501563984895
1977	59.5564875362651
1978	60.161589972781
1980	67.8444166208658
1981	46.8387367585549
1982	32.6927578327917
1983	42.8672889681055
1984	44.5599824112324
1985	35.5576528279116
1986	26.9342507027254
1987	24.1924736082011
1988	27.0522969103326
1989	34.4675020932869
1990	39.5229351611011
1991	13.4362619603887
1992	28.8098194997122
1993	40.4087024511996
1994	37.727441286933
1995	37.3308003874904
1996	41.179195330857
1997	39.540480496468
1998	29.2043847044503
1999	34.8365735674978
2000	51.3644113589282
2001	44.0885830746429
2002	38.1288168486834
2003	40.6360885106068
2004	46.8824794495593
2005	54.13842958264
2006	51.7820031567292
2007	48.7737107555426
2008	53.4605112170385
2009	39.5907640471852
2010	48.8263605663801
2011	59.0696960166924
2012	58.1449073185752
2013	56.3426547447197
2014	53.9714223132032
2015	37.3135995019662
2016	32.3641255908565
2017	36.7579336114171
2018	45.1522896110691
2019	39.8386703389064
2020	29.2848672951013