Year	% of GDP
1981	51.40513980424204
1982	49.76938710330687
1983	51.99150260792214
1984	52.613748401062786
1985	50.129637482410025
1986	53.60704840612905
1987	51.13879681515012
1988	52.75022452936121
1989	51.55503967890257
1990	50.913951485131605
1991	47.07566393383242
1992	45.154664269906505
1993	45.87877031196994
1994	45.544551402511566
1995	41.448488755985416
1996	41.37089046312956
1997	38.409417107360184
1998	37.44904958604086
1999	37.58432404907357
2000	38.03051053838577
2001	36.783501204647145
2002	35.86054584931541
2003	35.390653983419035
2004	35.16735789322048
2005	34.759167152541856
2006	35.17751539930999
2007	37.699236474326796
2008	39.87448928335412
2009	39.68554313795343
2010	37.97649511318736
2011	37.277173243079574
2012	40.340027777709764
2013	40.144296718396866
2014	40.061311417901095
2015	40.22121672760866
2016	40.611004150451194
2017	39.74727363176302
2018	38.43601368483574
2019	38.08212342037422
2020	38.01016908553904
2021	35.97447201182604
2022	37.94364594987372