Year	% of GDP
1978	9.379732223903178
1979	8.431380784313726
1980	7.491673140954496
1981	6.331916189772937
1982	4.774649014084507
1983	5.518019144144144
1984	4.851348982785603
1985	5.624228471363823
1986	9.644565182597155
1987	8.653424467870545
1988	8.636875569044006
1989	6.860816064660602
1990	8.346456692913385
1991	8.937166644985039
1992	7.895414734672849
1993	7.98579134324431
1994	7.756830489840792
1995	8.132929369437607
1996	6.7015465107332455
1997	5.458434756952128
1998	6.955916876793323
1999	5.4647070999793
2000	3.4765539803707743
2001	4.511057950495532
2002	5.320917858330562
2003	6.024214981789546
2004	4.980047235116866
2005	6.413569523616129
2006	6.195278881925572
2007	6.468566485984484
2008	5.596268705119117
2009	6.776695436760464
2010	5.312176872431792
2011	5.242004896457889
2012	4.257282114433512
2013	5.920856148125111
2014	6.059907202512145
2015	8.36764019343637
2016	11.467070061210858
2017	12.376398359346327
2018	9.207022628719825
2019	9.569292646467963
2020	12.853196268029702