Year	% of GDP
1971	0.16384421425141937
1972	0.18818900381074324
1973	0.20615007703108557
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	0.7910169144341775
1984	0.6949613780227532
1985	0.702777826320273
1986	0.5447978590388434
1987	0.3375967155457869
1988	0.4245362209252331
1989	0.5525440900462746
1990	0.6166582076480509
1991	0.7399100224960969
1992	0.6413769868255668
1993	0.4574362985790093
1994	0.44235708275115043
1995	0.6614494946694031
1996	0.5903093490730639
1997	0.5095464073050736
1998	0.4063391377105453
1999	0.28686684794074624
2000	0.3636780901166521
2001	0.5993809638480561
2002	0.42653745343852506
2003	0.4346624263914886
2004	1.0376962852464464
2005	0.8495798475317932
2006	0.8588357028584263
2007	0.9544259218100879
2008	2.2125595668576548
2009	1.1044454559525927
2010	1.327799634108071
2011	1.6132089115952302
2012	1.1763832476843326
2013	0.9515606254157915
2014	0.7744181869032111
2015	0.597124756668914
2016	0.6259453530795472
2017	0.7376388477169076
2018	0.8998674467563951
2019	0.6541687468725871
2020	0.5429010897515795
2021	1.0057767271908666