Year	% of GDP
1971	4.568597463333246
1972	4.567196701089356
1973	4.853910774940242
1974	5.232215609564934
1975	6.144641965745759
1976	6.4432862863075995
1977	6.686080950982625
1978	6.905789856483843
1979	7.236975962460248
1980	7.675529551287542
1981	7.886577898959505
1982	7.7845679369645575
1983	7.427647006078872
1984	7.281358220848107
1985	7.1073674438540735
1986	7.162374072006954
1987	7.343584067066721
1988	7.32327748260252
1989	7.491453726256601
1990	7.951302549772733
1991	8.045843245538794
1992	8.310930933004405
1993	8.375876998834865
1994	8.317477596172079
1995	8.607726456763121
1996	7.84726573732964
1997	8.144205006637698
1998	8.577375698279887
1999	8.92302828767768
2000	9.300407204487138
2001	9.386197585037788
2002	9.745361855246017
2003	9.892374745762726
2004	10.626538413936977
2005	11.371024953509464
2006	11.974170990516349
2007	12.794267699808266
2008	13.38411727366202
2009	12.844698545405866
2010	13.088820831131162
2011	13.420992228636953
2012	13.711506873731697
2013	14.293747472633829
2014	15.027550189764131
2015	15.328732115666128
2016	15.268900502964684
2017	15.768953350763006
2018	16.174588968630218
2019	16.501117668801694
2020	14.48520147167779
2021	15.123439948502003
2022	16.55013963228633
2023	16.98821150699043