1994

6.8

1932

7.4

2000

7.1

2000

6.3

1957

7.2

2007

6.2

2004

6.2

2003

5.8

2005

6.5

2004

6.8

2014

5.9

1935

7.3

1998

7.1

1978

4.4

1979

6.8

1969

6.3

2008

6.3

2010

6.2

1955

6.8

1969

5.8