Year	% of GDP
1960	21.139251024747622
1961	16.605998857977283
1962	14.310116694314493
1963	16.0176179468354
1964	15.96785971392895
1965	15.128875236540226
1966	15.950369786063229
1967	18.426674455440814
1968	20.41522142763355
1969	20.878087360457183
1970	22.996168039287816
1971	18.02169837354118
1972	22.672962053018672
1973	23.26092822411132
1974	26.076379258323858
1975	22.16232109787583
1976	19.054320046697107
1977	22.472305973534148
1978	24.54096738095344
1979	25.867690551581003
1980	24.955734412606827
1981	23.411557546830764
1982	21.242878389200325
1983	21.02593844186684
1984	21.97477620998331
1985	17.303362865221487
1986	19.58474073777306
1987	22.052618901694217
1988	25.147605481622882
1989	20.104656319496062
1990	11.481094677285926
1991	10.556777560924456
1992	13.69143719277422
1993	19.218623340467403
1994	20.770288999378497
1995	20.141271374549838
1996	22.69048014925606
1997	26.47018462809748
1998	28.650684859336025
1999	31.44367758524
2000	31.84862105863487
2001	27.13925159124552
2002	27.92706955019515
2003	30.104057226539897
2004	28.32564646526418
2005	28.66331028038283
2006	28.049611929700685
2007	27.864316427147216
2008	23.493673158061885
2009	25.322738465662407
2010	25.440602595230278
2011	24.387123993812807
2012	27.175645273220795
2013	27.196242407447123
2014	25.82170184518221
2015	27.6908850429799
2016	28.372303100950447
2017	28.495280166665793
2018	30.368105796662142
2019	26.134412121799965
2020	34.464307898659825
2021	30.606915781459286
2022	31.824364032779695
2023	35.44834519702305