1999 7.2

1999 6.3

1998 6.9

1998 6.1

1998 5.6

1998 7.2

1998 6.4

1998 7.1

1998 8.0

1998 6.6

1998 6.5

1998 7.4

1998 6.6

1998 7.3

1998 6.8

1998 5.9

1998 7.1

1998 6.3

1998 6.2

1998 6.1