Year	% of GDP
1970	26.753419771206353
1971	26.396469127345533
1972	26.66079328929129
1973	27.920379170967085
1974	28.051539135521057
1975	24.855753348778528
1976	25.923116053148583
1977	26.059995813148806
1978	26.505797025525506
1979	27.074824798436776
1980	26.234255768798654
1981	25.522088459887804
1982	24.265438573481987
1983	24.054386764368154
1984	25.32478636438491
1985	24.760779221927866
1986	24.831529506279395
1987	25.086708320961193
1988	25.9823039782976
1989	26.441481737513683
1990	25.856704548344272
1991	25.267495604143335
1992	24.49956282633422
1993	23.765436946636385
1994	24.07819727752797
1995	24.323245899761268
1996	24.17855406784751
1997	24.102000126191765
1998	23.8511268940892
1999	23.931736092669567
2000	24.36243183365153
2001	23.23682497451712
2002	22.42220952946869
2003	22.391488100053095
2004	22.83552735053491
2005	23.2665408237311
2006	23.76005992055716
2007	23.902008530044416
2008	23.428747423337068
2009	20.323757110692206
2010	21.159564541287896
2011	21.719976534592327
2012	21.687615240117264
2013	21.597008940511405
2014	21.936053961361075
2015	22.268110092469136
2016	22.117468940898004
2017	22.4885215825058
2018	22.730617163859073
2019	22.978916360196806
2020	22.67677411887565
2021	22.95198718515247
2022	23.487257043190976