2001

6.5

1953

7.2

2013

5.8

2016

6.2

1973

0.0

1981

6.4

1963

7.1

1997

7.0

1960

8.2

1988

6.6

1943

8.1

1985

7.0

1998

7.4

1946

7.8

2005

6.9

2006

7.1

1993

7.5

2003

5.9

2002

5.6