Year	%
1999	2.147404195821958
2000	1.3259446354277644
2001	0.7824026832487044
2002	0.18096851337863804
2003	0.8120959340621366
2004	1.527566876947347
2005	0.7668428679021395
2006	0.9560742049914455
2007	2.4805586580710406
2008	2.2460401710562703
2009	1.7587501328200517
2010	0.8020437387345896
2011	1.8028566436627145
2012	0.17634035859380331
2013	0.21723239915186146