Year	% of GDP
1977	16.724115134123192
1978	12.866441779075274
1979	11.636245041644573
1980	12.060931044215266
1981	14.323902990017084
1982	13.487221632212623
1983	15.027511578792707
1984	18.71158581094884
1985	22.516016487486347
1986	23.294692336299114
1987	21.418813784251682
1988	20.915453870672962
1989	18.696605884754717
1990	19.357231041761857
1991	13.184192033161096
1992	14.618672887971643
1993	13.097043192269126
1994	15.244874897982747
1995	15.892266734595195
1996	14.138785596659664
1997	15.729374236928336
1998	17.439231200720386
1999	15.74539898204911
2000	15.765473524392881
2001	16.56779768392127
2002	14.346387388015794
2003	13.413768065193175
2004	14.875463154474799
2005	14.18020607276218
2006	16.454569722558258
2007	17.150268180388487
2008	15.259285291924071
2009	15.824239893639838
2010	15.861284552191353
2011	13.850589891963857
2012	13.890666061311197
2013	13.888960542440595
2014	13.559388810539227
2015	14.684754204148051
2016	15.932181424604655
2017	14.251563320258825
2018	14.437717302086442
2019	13.910626109583365
2020	14.854177029261177
2021	14.411007445542081
2022	13.146304138822021
2023	12.634748482453615