Year	% of GDP
1972	1.6144037651179337
1973	1.2628246862582224
1974	0.13137092353759247
1975	3.1509213581307898
1976	4.419209442450459
1977	2.681780321698355
1978	2.636078685183996
1979	1.5156053686380828
1980	2.681195965291794
1981	2.6441819733517598
1982	4.14978337448924
1983	5.932519142617662
1984	4.311458279929256
1985	4.6218246274065855
1986	5.088837943493701
1987	3.059596742883683
1988	3.0826298334860454
1989	2.4727115453472255
1990	3.6842980816830853
1991	4.4885386454229845
1992	4.749761783419758
1993	3.614899281321339
1994	2.5566620869696
1995	2.429643531217746
1996	1.693849770455124
1997	0.4177745421431484
1998	-0.5174291922246832
1999	-0.7409952372776822
2000	-2.1175609880895925
2001	0.7166296911057327
2002	2.617650782593534
2003	4.446582888508287
2004	3.468420632436448
2005	3.3295197484326384
2006	1.9124497114174421
2007	2.248434492566409
2008	9.018224191881389
2009	10.190327791955923
2010	10.573728064097738
2011	7.245005688529548
2012	7.2516135395896
2013	4.838989693486608
2014	3.8968183134254444
2015	4.0257944716896406
2016	4.291177666521793
2017	3.1288773009873037
2018	5.761277543178734
2019	5.133585582798613
2020	23.12321525736213
2021	6.140222442288443
2022	5.1981032038500805