Year	% of GDP
1997	11.932725773195877
1998	12.63322880416077
1999	13.372688098234375
2000	11.901229823212914
2001	11.87807719772992
2002	14.430590191188694
2003	15.376713459950453
2004	16.508643948637193
2005	15.168103772454753
2006	15.008285536825266
2007	14.944119165496463
2008	16.418394000229235
2009	16.85630600574447
2010	16.84447668507074
2011	16.377332913784656
2012	15.198026622528529
2013	14.066114453475095
2014	14.109565884040684
2015	13.465051283568894
2016	13.525356893395516
2017	15.359881763704736
2018	15.325405456931218
2019	15.405390526761156
2020	8.901728325079784
2021	5.684795545644537