Year	% of GDP
1977	6.68372591890963
1978	6.909434368300913
1979	7.036124743311892
1980	8.429605415517766
1981	8.35422687339627
1982	7.239331007841177
1983	7.410096213407767
1984	7.814444826172762
1985	13.427531776751692
1986	7.792645192855686
1987	7.623189519999488
1988	7.685253768343888
1989	8.425281292981747
1990	8.639741220080161
1991	10.41341142755766
1992	14.291951107277775
1993	14.241884590527903
1994	15.961252841374712
2009	12.192855400396013
2010	13.684871480709354
2011	15.329373951048447
2012	12.366966479493744
2013	11.780033020761767
2014	11.882128721116311
2015	9.569889383887006
2016	8.080966309426925
2017	9.1402221387192
2018	4.469741839362943
2019	6.927163540406873
2020	5.118948766146732