1994

5.7

2007

6.4

1964

6.2

1999

6.6

1995

7.0

1989

7.0

1992

6.7

1998

6.6

2006

6.7

1940

7.6

1974

7.3

1936

0.0

2015

4.3

1964

7.3

1992

6.8

1976

3.3

2002

5.5

2001

6.2

1982

6.1

2021

0.0