Year	% of GDP
1970	11.281962201035443
1971	12.135558523103345
1972	21.91687692659496
1973	22.278831372529112
1974	21.965375541242793
1975	20.997468537907682
1976	21.41079875123785
1977	22.549312031023586
1978	23.684159796779173
1979	24.34704094920926
1980	23.572609934174157
1981	23.495126855155572
1982	22.52199795495047
1983	22.293074097847164
1984	23.207900205025553
1985	23.454798668630943
1986	23.402349141005065
1987	22.96339784801239
1988	22.489164600409715
1989	22.10941723212473
1990	21.32409943352942
1991	20.13098155064849
1992	19.791039265649797
1993	19.979170992187417
1994	20.330163523925496
1995	20.680221785450033
1996	21.137477967614387
1997	21.490942343072263
1998	22.143044787544476
1999	22.615717894683634
2000	22.90510639029154
2001	22.38161296871564
2002	21.43676401129639
2003	21.504509579374393
2004	22.029211703536436
2005	22.842555377826177
2006	23.021848302051627
2007	22.413289244214273
2008	21.444725653124642
2009	19.110605347845187
2010	18.81114806393511
2011	19.226747967696934
2012	20.0131357179815
2013	20.188310020105607
2014	20.786005589837238
2015	20.897269109665903
2016	20.83470108061177
2017	21.119123373471595
2018	21.399803297833852
2019	21.441711214775427
2020	21.696660879156
2021	21.54597824884621
2022	21.42501823325583