Year	% of GDP
1980	8.871311697879104
1981	9.899345747357826
1982	9.497466652879744
1983	10.003823630033606
1984	10.537117669532597
1985	9.915233177789435
1986	7.847187120538697
1987	6.47307924984876
1988	8.166362846882652
1989	9.13206936976998
1990	6.96487819063859
1991	8.093352984524687
1992	21.597958167330678
1993	22.161979391100704
1994	25.810996955859967
1995	14.265867480561301
1996	21.243655711868335
1997	23.632643133480524
1998	28.978437243794186
1999	23.940934741170057
2000	29.02622304008687
2001	28.37816245620578
2002	23.95636982814603
2003	25.461939902306757
2004	27.674733800148598
2005	26.017599793747014
2006	27.173113889754884
2007	26.932392354211938
2008	25.514122826632967
2009	22.911339564730056
2010	19.646586729266083
2011	19.107283385085548
2012	21.26298865764855
2013	21.672389759390317
2014	25.62961552074966
2015	25.69464124179121
2016	26.38794971200617
2017	25.7538439671304
2018	25.29223527791912
2019	25.325180246070843
2020	18.70263210571121
2021	20.06750403262952
2022	21.38497959370183
2023	22.936222013895698