1984

5.7

1965

4.0

1990

6.5

2000

4.9

2006

7.3

2007

5.8

2002

6.7

1992

4.3

2007

6.5

2006

6.0

1935

7.2

2006

7.1

1966

6.3

1984

6.8

1993

5.1

1961

5.0

2009

4.6

2016

5.1

1944

6.9

1965

6.7