Year	% of GDP
1998	0.203309997916222
1999	0.218060001730919
2000	0.226899996399879
2001	0.236939996480942
2002	0.279670000076294
2003	0.318340003490448
2004	0.335640013217926
2005	0.367269992828369
2006	0.383459985256195
2007	0.400070011615753
2008	0.385939985513687
2009	0.444370001554489
2010	0.442919999361038
2011	0.452630013227463
2012	0.437649995088577
2013	0.484849989414215
2014	0.512049973011017
2015	0.47529000043869
2016	0.519699990749359
2017	0.542590022087097
2018	0.614049971103668
2019	0.709500014781952
2020	0.843869984149933
2021	0.830590009689331