Year	Number
1992	35.17326732673267
1993	40.02824858757062
1994	36.286231884057976
1995	31.468218442256042
1996	30.95334685598377
1997	30.366225839267546
1998	24.334251606978878
1999	21.769662921348313
2000	27.315914489311165
2001	27.97186400937866
2002	49.44055944055944