2016

6.5

1940

5.8

2002

6.1

1992

6.8

1973

7.3

1990

6.7

2015

7.5

1962

7.9

2008

5.8

1986

5.2

1994

5.9

2003

7.3

2006

6.6

1987

6.9

1964

6.3

1933

5.4

1995

5.8

1960

5.2

1966

3.5

2010

5.6