Year	% of GDP
1978	40.64563462949376
1979	43.148880105401844
1980	43.862494528970394
1981	49.25677751811071
1982	55.68861968517332
1983	56.69098980326696
1984	54.36161590784291
1985	55.70737322688103
1986	55.24007394349329
1987	50.76164531598022
1988	49.738499155435804
1989	51.64666983012343
1990	52.96054880222747
1991	54.02379232206518
1992	55.29509520163033
1993	55.27062068998333
1994	56.743502411322886
1995	56.3790622800039
1996	55.9097045277034
1997	57.187598038141616
1998	57.49562338986631
1999	59.04533106668157
2000	57.12160835124025
2001	59.11213479801395
2002	59.93218479882856
2003	61.39650479002263
2004	61.40039547057793
2005	62.39707660537047
2006	60.36090646127826
2007	60.023340093627766
2008	60.254734672070285
2009	61.49731819762631
2010	61.59457696937476
2011	60.917953852938
2012	61.87239513170213
2013	62.02803816876815
2014	61.697428343201686
2015	61.882238862901154
2016	61.56805210916981
2017	62.248732824536056
2018	63.59953970973616
2019	63.8664550367358
2020	61.074964102145465
2021	60.77308927439088
2022	61.41212812525355
2023	62.974249580984306