Year	% of GDP
1970	15.719688115993646
1971	16.547431421157498
1972	16.802559126195916
1973	16.95953056609529
1974	17.531162337742177
1975	18.70408816100917
1976	18.63943720275227
1977	18.865191541090862
1978	19.20371361715046
1979	19.174912841501087
1980	19.51961335506585
1981	20.213432690296578
1982	20.244948683021263
1983	20.32112716463246
1984	20.11843505752627
1985	20.188728829663557
1986	19.997564063772792
1987	20.236043420182334
1988	19.922312212944995
1989	19.3948278543645
1990	19.473464358227968
1991	19.636869527638233
1992	20.046565441910815
1993	20.43333847906711
1994	20.159120983496727
1995	20.005726094587118
1996	20.078189726640037
1997	19.81954651548875
1998	19.51400435842692
1999	19.543664951876075
2000	19.39513971721135
2001	19.473119847403886
2002	19.830784668660822
2003	20.10751877722395
2004	19.972829650941755
2005	20.077116232713436
2006	19.9014767612144
2007	19.617138956187272
2008	20.12843431532633
2009	21.79770887451508
2010	21.546910563405724
2011	21.165828496814772
2012	21.18889246710609
2013	21.26801514905247
2014	21.134075204975307
2015	20.800677188649743
2016	20.726712129905568
2017	20.513769522248165
2018	20.43348470923407
2019	20.499874845622564
2020	22.400595068495875
2021	21.94231485040432
2022	21.47633802285917
2023	21.131207389132182