Year	Percent
2000	61.66279
2001	69.50175
2002	54.68314
2003	69.28658
2004	41.23885
2005	43.64669
2006	49.93315
2007	46.32888
2008	31.29873
2009	23.42579
2010	26.72074
2011	22.20124
2012	26.85129
2013	26.31999