1997

6.5

2008

6.6

2006

7.0

1992

6.9

2001

4.4

1984

5.0

1932

7.3

1983

7.3

2002

6.7

1972

7.8

1939

7.6

1997

7.5

2021

0.0

2001

7.8

2000

7.6

1987

7.8

2001

7.2

2005

7.1

1964

7.1

1989

0.0