Year	% of GDP
1987	3.375576854810082
1988	3.2900816802800463
1989	3.0976500000000002
1990	3.6524898006760695
1991	5.195726212623077
1992	6.388907317720427
1993	6.4981964783038375
1994	7.551673321218513
1995	8.90992668120779
1996	9.537842584542974
1997	9.709006929384591
1998	7.597834353391321
1999	8.316376835781043
2000	9.539981882727384
2001	9.592743697579209
2002	9.202113840738416
2003	9.21697504345615
2004	9.008497495793629
2005	15.404177928748785
2006	15.837946541970974
2007	12.659012576423006
2008	13.263357923356041
2009	12.806009209757843
2010	11.043426467549954
2011	11.359599342337146
2012	12.393355443978058
2013	15.733151000159996
2014	16.697797658220914
2015	17.16856730093777
2016	17.83392181193746
2017	19.0067748737965
2018	19.007687216105925
2019	20.270005487280457
2020	17.3171431285218
2021	19.14355810695585
2022	21.353862265611344
2023	20.772411734607747