Year	% of GDP
1998	19.609808826982466
1999	16.034202362089562
2001	14.103936419711177
2002	14.172381403249549
2003	15.743795163788294
2004	17.44586633838821
2005	19.757004537823022
2006	14.235414839888689
2007	14.766739830480097
2008	16.383940042292842
2009	14.500210110504739
2010	14.6688561532361
2011	14.49567736872173
2012	16.532241660907623
2013	17.85330573491221
2014	20.25623962530454
2015	23.233787759936963
2016	22.408683342016122
2017	20.922075963224664
2018	20.11071184211318
2019	21.956162723983468
2020	25.372234408848282
2021	25.137096100654354