1992

2.7

1954

4.9

1932

6.1

2003

6.1

2007

7.0

2006

6.0

2007

6.1

1942

6.5

1937

5.5

2005

6.6

2007

5.3

1961

6.1

2006

6.7

2000

7.0

1940

5.3

1939

6.4

1988

7.1

1969

5.6

2016

6.0

1984

6.0