Year	Number of
1990	1813
1991	1733
1992	1653
1993	1537
1994	1414
1995	1299
1996	1264
1997	1267
1998	1269
1999	1181
2000	1071
2001	1005
2002	984
2003	958
2004	936
2005	919
2006	913
2007	905