Year	% of GDP
1976	1.9708820305950405
1977	2.580337134863537
1978	2.6664135815291803
1979	3.2433093924658136
1980	3.818792555393328
1981	3.3315102595982014
1982	3.551476163220698
1983	3.5265001192851817
1984	3.622934148894304
1985	3.2131280670966613
1986	3.297726702814447
1987	3.0542760583459194
1988	3.3513699494457985
1989	3.685779272553967
1990	3.4559391429396893
1991	3.638305509976085
1992	4.011898271217938
1993	4.406760503963411
1994	4.7820386480821035
1995	5.876182674173118
1996	3.8615153519071006
1997	4.093147273345778
1998	3.9287738101111787
1999	4.274880184653107
2000	4.6159307148947955
2001	4.244186294965552
2002	4.214000740917177
2003	4.705730029560549
2004	4.7469024120354275
2005	5.557943277520998
2006	5.838650201838177
2007	6.325743485026525
2008	6.496712395717447
2009	5.2605626708123
2010	5.928603559994399
2011	6.005577840533478
2012	6.199891148929408
2013	6.376600539289498
2014	6.306426966609662
2015	5.612547815167006
2016	4.276608678540513
2017	4.21063932233337
2018	4.687943451044201
2019	4.490349593112429
2020	3.7292010707220533
2021	4.405907294233388
2022	4.438726696383978
2023	3.9760864710001744