1981 : 3200 products

1982 : 12480 products

1983 : 16022 products

1984 : 16122 products

1985 : 15842 products

1986 : 16244 products

1987 : 16732 products

1988 : 15358 products

1989 : 15957 products

1990 : 27986 products

1991 : 21261 products

1992 : 17007 products

1993 : 16826 products

1994 : 17013 products

1995 : 16989 products

1996 : 17152 products

1997 : 19009 products

1998 : 17540 products

1999 : 16941 products

2000 : 17053 products

2001 : 17222 products

2002 : 17209 products

2003 : 17159 products

2004 : 17235 products

2005 : 17019 products

2006 : 9295 products