Year	% of GDP
2000	0.538837892336937
2001	0.470599713307603
2002	0.285754172162196
2003	0.207565072369415
2004	0.186736793884873
2005	0.17845542977487
2006	0.157094763445779
2007	0.138180683366343
2008	0.116556167065436
2009	0.10271275104536
2010	0.109123504913292
2011	0.0994649125401589
2012	11.4983610766133
2013	19.6350983163271
2014	20.0904021624553
2015	20.7991599837419
2016	15.0014711303666
2017	19.9644953200386