2014

6.8

2023

5.3

1984

5.1

1956

5.3

1986

7.6

1997

6.6

1999

6.3

2002

6.0

1931

8.1

2007

6.6

2002

6.6

2001

6.1

1980

7.1

2013

3.4

2016

6.0

1987

0.0

1976

6.0

1932

7.8

1931

7.2

1995

6.5