Year	% of GDP
1972	33.68385912496024
1973	32.119365085689886
1974	38.883257779904284
1975	34.99516902040727
1976	31.437558720868523
1977	30.85383106379298
1978	28.64301781117802
1980	24.677429923002734
1981	28.011943463189837
1982	30.071967181107944
1983	29.61800404233269
1984	29.722180096622814
1985	29.062573853614005
1986	28.11905667002572
1987	28.170889215729172
1988	27.650302117488796
1989	27.467189183945546
1990	64.5334405605792
1991	66.25845701654268
1992	67.59946310537183
1993	69.97141837121258
1994	70.5267751909498
1995	87.58207726220877
1996	92.02270714351219
1997	91.34012897869157
1998	89.41586252951971
1999	89.62125313729594
2000	88.04664744211198
2001	92.75997687091166
2002	91.3468059292664
2003	98.48762908320423
2004	94.85839324290467
2005	93.80696027545557
2006	93.82158785250161
2007	92.43027382588124
2008	41.877075999220224
2009	41.098178131550206
2010	39.872040669917396
2011	40.97999864461009
2012	40.36548485168031
2013	39.610562101514816
2014	38.42601745355761
2015	35.9958431490196
2016	35.356739716676
2017	33.51038708331198
2018	34.0171090585389
2019	33.275293901466604
2020	42.81852002454858
2021	40.749187730915665
2022	37.705264884887164