Year	% of GDP
1997	2.27335000038147
1998	1.64902997016907
1999	3.22785997390747
2000	2.64670991897583
2001	2.42614006996155
2004	1.59294998645782
2005	1.69476997852325
2009	2.31173992156982
2010	1.98194003105164
2011	2.25789999961853
2012	2.20615005493164
2013	2.85070991516113
2014	2.3199999332428
2015	2.34299993515015
2016	2.38800001144409
2017	2.45481991767883
2018	2.2590000629425
2019	2.37199997901917
2020	2.74000000953674
2021	2.8881299495697
2022	2.53900003433228