Year	% of GDP
1974	11.101890635743825
1975	10.149334631431607
1976	11.215814822317048
1977	13.615100526115922
1978	10.504054229567911
1979	12.641387570593906
1980	4.172430598647878
1981	-3.2515592353954474
1982	13.22154631070581
1983	8.192516433220026
1984	7.516613328510617
1985	2.634223486331752
1986	4.137374051411521
1987	4.357862682678872
1988	0.7704325961169024
1989	4.514204625127027
1990	9.688373737768963
1991	10.75654139066476
1992	9.575206416488333
1993	9.685313337499815
1994	14.506101473548846
1995	15.89711153794355
1996	15.243891330184256
1997	16.18785117599197
1998	15.798575236332635
1999	12.456530472493101
2000	12.683879166683647
2001	13.278921809742993
2002	13.613288752563871
2003	11.366391004075247
2004	13.256865781635682
2005	12.190929724022736
2006	12.46486563968473
2007	14.045190406808967
2008	12.641740750266841
2009	11.454386753592951
2010	11.387262420436256
2011	12.125649003918907
2012	13.533167737180602
2013	16.28315594946333
2014	18.602178763246812
2015	13.862030051661772
2016	17.402289432135642
2017	17.399154612940098
2018	19.636605367699204
2019	21.71952965443026
2020	21.31082491909117
2021	23.403272822764908