Year	% of GDP
1970	0.9151616171696043
1971	0.6669885996678592
1972	0.5340831793244072
1973	0.7353688799285398
1974	1.3911607983435386
1975	0.8146645587649702
1976	0.8504727673725996
1977	0.9577770744240701
1978	0.6665382645811182
1979	0.8236911100884328
1980	0.8539769919538258
1981	0.7096246815878611
1982	0.5561044608612178
1983	0.6123864830537389
1984	0.4886743475453536
1985	0.46058285158881984
1986	0.35266332722996047
1987	0.42786590491163157
1988	0.6577911503459842
1989	0.5852061889545881
1990	0.4762010459320526
1991	0.4350117121315942
1992	0.6581738247636564
1993	0.42407741075290556
1994	0.41654813757243586
1995	0.4051393763497283
1996	0.3086217312854046
1997	0.28229515371007197
1998	0.3246461144672763
1999	0.3490441147729329
2000	0.3152324491864807
2001	0.2456902016257288
2002	0.24098485910424666
2003	0.2437459469266445
2004	0.4252681285073881
2005	0.7307631205692519
2006	1.2163227541529478
2007	1.737645859498749
2008	1.6914282166081518
2009	0.8592431590896745
2010	1.731285990929078
2011	1.9544050096669754
2012	0.9945029572280496
2013	0.8337291837612707
2014	0.5754506954913527
2015	0.3377175351953597
2016	0.36941949902354254
2017	0.46667728278310006
2018	0.411954326161136
2019	0.35420670005940436
2020	0.35921766294175267
2021	1.0841782757769283