Year	Number of
1988	0.00078
1993	0.0118
1995	0.00359
1998	0.00069
2000	0.00838
2001	0.00791
2002	0.00786
2003	0.00507
2005	0.00975
2006	0.00983
2007	0.0063
2008	0.00602
2009	0.00787
2010	0.01078
2011	0.01301