Year	% of GDP
1997	26.649389909944805
1998	17.780610815199342
1999	24.093673261352063
2000	18.842317652172948
2001	18.816644481638335
2002	20.88709565470105
2003	24.050369916363653
2004	27.06916422401123
2005	31.737480478087647
2006	45.149050499705446
2007	67.91211087824881
2008	31.41980218927815
2009	59.312008470557195
2010	70.05296494947022
2011	47.669633183665965
2012	53.26586476444067
2013	40.25216910685928
2014	39.265567124792774
2015	29.797056456529937
2016	42.25626606098311
2017	47.0209506205012
2018	41.952657005319935
2019	43.33991285068453
2020	43.24127997191848
2021	34.47066721804003
2022	28.93232562973631