2003

8.0

2005

7.2

1996

6.4

1984

7.2

1994

8.3

1983

8.2

1982

6.7

0.0

1980

7.3

1997

6.6

1999

6.3

2002

6.0

1931

8.1

2004

6.5

1986

5.8

1964

5.7

1998

7.1

1999

6.8

1997

6.8

1998

5.6