Year	% of GDP
1970	0.1634260337471172
1971	0.14672075647741348
1972	0.22250683313788194
1973	0.43129558454861033
1974	0.4105822556597233
1975	0.33085524140946465
1976	0.33245174779847214
1977	0.22318118801687165
1978	0.22894683943070313
1979	0.2688535954916721
1980	0.21117832954994983
1981	0.393022474372387
1982	0.3918077903628735
1983	0.2842170048710576
1984	0.44322272304384985
1985	0.45129844976601635
1986	0.6793337476285267
1987	0.7788642494197509
1988	1.1336906192664924
1989	1.4874373564760892
1990	1.593735850970803
1991	0.8672622295430482
1992	0.43470326380935953
1993	0.3066608451726768
1994	0.3625049936497044
1995	0.4080799289053134
1996	0.5362663241145215
1997	0.5339447200640047
1998	0.4832440076971628
1999	0.52333825156509
2000	0.9062849987847399
2001	0.8151482956762607
2002	0.7387733606767618
2003	0.762564558891062
2004	0.8300177868816754
2005	1.069344224313775
2006	1.263727380302377
2007	1.593748009139961
2008	2.225392098966083
2009	1.392895599181432
2010	1.3831484834973538
2011	1.8744174471393296
2012	1.8754072906794053
2013	2.9868534149334542
2014	2.8165120848111216
2015	3.1139970556235896
2016	3.569582259445367
2017	3.523747061525611
2018	3.178379096434115
2019	5.046593108420619
2020	2.9693522943029063
2021	4.171919587362153
2022	4.037686024953975