Year Total 1984 23670 1985 37530 1986 35550 1987 30410 1988 31960 1989 32880 1990 35150 1991 35580 1992 38220 1993 44290 1994 54960 1995 55680 1996 49240 1997 50450 1998 46210 1999 44290 2000 36400 2001 42960 2002 53420