Year	% of GDP
1977	0.5396573788648897
1978	0.8475609762854441
1979	1.5185809112513495
1980	2.92901999821265
1981	3.57162890819814
1982	1.5238325121885523
1983	3.334828886926125
1984	2.7256863467556087
1985	3.229687021782689
1986	1.122847344483859
1987	1.139617801819184
1988	1.5122958436990248
1989	1.946614230639477
1990	0.18400045373235877
1991	0.10278721472296161
1992	1.759123863244188
1993	0.8467509393341008
1994	0.8379061811084298
1995	2.5031879313175147
1996	2.456338580440613
1997	3.592104124388761
1998	6.102990930065226
1999	6.226345585779573
2000	5.227905367239796
2001	4.705923735908194
2002	5.390544627932539
2003	5.729725586907934
2004	5.265141553098792
2005	2.000381283563864
2006	1.7692465112082483
2007	1.6818781952052584
2008	2.4534173133562946
2009	2.7012154985909858
2010	2.4685615039900832
2011	1.4980777418383526
2012	1.58330324714586
2013	1.4399138690874085
2014	1.0230009764408152
2015	0.29267639095457093
2016	0.3598642110517299
2017	0.5157881511998674
2018	1.3150777470696038
2019	1.6151772190482667
2020	1.832300855369602
2021	3.2691657948743353
2022	2.9021126688224634
2023	0.9146869339110621