1997

5.8

2016

6.7

1999

8.0

1941

8.0

2014

6.9

2005

5.9

1999

5.8

2009

6.7

2018

6.1

1942

6.8

1972

6.3

1995

6.4

1961

6.5

1964

6.5

2008

6.1

1938

7.0

1970

4.1

1970

6.0

1991

5.6

1988

6.2