Year	% of GDP
1968	6.727947622060598
1969	7.147092671458459
1970	7.307219510688551
1971	7.668063515752883
1972	7.023094866373264
1973	6.98980142980247
1974	7.530901310233603
1975	7.851608478448956
1976	7.920411631760234
1977	7.72016065052616
1978	7.034793383510698
1979	7.322411906088153
1980	7.522201656797887
1981	6.714871840207628
1982	6.8804344256060705
1983	5.540949701994377
1984	5.816518906368953
1985	6.539727659592463
1986	7.990272087797859
1987	7.904147932643188
1988	7.849527755889604
1989	7.223050599607926
1990	7.001909640850276
1991	6.859664803354848
1992	6.86914673381868
1993	7.281933723433993
1994	5.086782804700263
1995	4.904968201249497
1996	5.715726487535512
1997	5.4506895433383855
1998	5.4174161219423445
1999	5.859468291428536
2000	5.504345660978007
2001	6.116646693278813
2002	5.550779954775478
2003	5.805731755498522
2004	5.734077469489033
2005	5.64367863472026
2006	5.994539869354916
2007	5.830823501728344
2008	5.854359651645817
2009	6.065056171159969
2010	5.811305626915118
2011	5.570851926371132
2012	5.80435628373409
2013	6.019128040117772
2014	6.491210346893737
2015	7.630381281389028
2016	7.670702696585359
2017	7.550976905750042
2018	7.667358642416778
2019	7.931801048672502
2020	5.942072166558548
2021	7.0218667739864005
2022	9.145731533286638
2023	8.765322295981806