Year	% of GDP
1971	0.16384421425141937
1972	0.18818900381074324
1973	0.2061500770310856
1974	0.3773612147473785
1975	0.8713756501176406
1976	0.9668512971223628
1977	0.8590267211827436
1978	0.6693071190883406
1979	0.6050106768029679
1980	0.7417095115384746
1981	1.1324966834647254
1982	1.2345531854895189
1983	0.7910169144341774
1984	0.6949613780227532
1985	0.702777826320273
1986	0.5447978590388435
1987	0.3375967155457869
1988	0.4245362209252331
1989	0.5525440900462745
1990	0.6166582076480509
1991	0.7399100224960968
1992	0.6413769868255668
1993	0.45743629857900925
1994	0.44235708275115043
1995	0.6614494946694031
1996	0.590309349073064
1997	0.5095464073050737
1998	0.4063391377105453
1999	0.2868668479407462
2000	0.36367809011665214
2001	0.5993809638480561
2002	0.4265374534385251
2003	0.43466242639148855
2004	1.0376962852464464
2005	0.849579847531793
2006	0.8588357028584263
2007	0.9544259218100879
2008	2.2125595668576548
2009	1.1044454559525927
2010	1.3277996341080711
2011	1.61320891159523
2012	1.1763832476843328
2013	0.9515606254157917
2014	0.774418186903211
2015	0.5971247566689138
2016	0.6259453530795475
2017	0.7376388477169078
2018	0.8998674467563947
2019	0.6541687468725873
2020	0.5429010897515795
2021	1.0057767271908664