2006

5.5

2021

6.5

2004

5.2

2001

7.1

1996

6.4

2003

7.3

1980

6.0

2006

7.0

1949

7.0

1993

7.1

2005

6.8

1964

5.5

1955

0.0

1998

6.1

2001

6.4

1989

4.3

1979

6.6

2014

6.7

2015

7.3

1999

5.1