Year	% of GDP
1977	31.520255831838156
1978	33.980837148471316
1979	36.66209982678672
1980	39.374769410187774
1981	36.88662729570408
1982	35.53709011011833
1983	36.52502863064319
1984	30.61771283666897
1985	29.39890661406661
1986	21.77997200331535
1987	21.3469270775283
1988	16.975973348139313
1989	17.491850008916895
1990	23.977688119031043
1991	32.25932247219878
2005	50.72330145414674
2006	53.690661292422995
2007	55.80669549945796
2008	56.61939223398309
2009	47.951550537096956
2010	51.22469177825766
2011	49.98849909776075
2012	48.72145815733681
2013	46.60919213210325
2014	44.68161380622055
2015	39.047424574725234
2016	39.76616466486581
2017	39.50714314588335
2018	40.470786772619796
2019	38.47101262134246
2020	33.33708651030182
2021	38.67407668424574
2022	44.47338461017299
2023	41.22593770399489