Year	% of GDP
1970	0.582812465207215
1971	0.48861520100599076
1972	0.4981997245062178
1973	0.6766737795129761
1974	0.948907685577865
1975	0.45095767104289636
1976	0.4753036901552846
1977	0.5505609645858044
1978	0.4037765943174818
1979	0.583933320691758
1980	0.69709129797639
1981	0.3612110433222586
1982	0.49082676874898723
1983	0.49073135226179215
1984	0.47103604736040794
1985	0.4109831116451155
1986	0.23742287562600697
1987	0.40492663486687264
1988	1.3117672591605989
1989	1.1264528060913033
1990	0.7440811222451459
1991	0.4273324438223192
1992	0.3425446801708212
1993	0.18173626617928348
1994	0.20906721252603352
1995	0.26092636760479404
1996	0.22094605447820914
1997	0.17882076312582895
1998	0.1844064669671319
1999	0.19665754114377879
2000	0.19833871039947773
2001	0.1789336144357563
2002	0.2105478487935621
2003	0.22491210924701804
2004	0.36823382478551464
2005	0.6768475377928973
2006	1.0323418638448092
2007	1.4068117056668776
2008	1.3218790287867244
2009	0.7132909118412524
2010	1.3950124912504465
2011	1.630575809935398
2012	1.2523686981536506
2013	1.1013203287920195
2014	0.7250161533799425
2015	0.4961767179634926
2016	0.6789964757193746
2017	0.7825539705932189
2018	0.7462987024311671
2019	0.5360258609001857
2020	0.8109989665305556
2021	2.8861913520547904