2014

4.6

1957

8.1

2009

5.0

1968

7.1

1949

6.9

1976

7.8

1943

8.2

2002

6.1

2004

5.9

1992

6.7

1988

6.8

2011

8.0

1938

7.5

1981

5.8

1999

7.3

1994

7.3

2015

6.7

2016

6.7

2001

7.5

1986

7.3