2004

6.8

2003

6.2

2008

6.9

1981

0.0

1995

6.2

1998

7.1

1998

7.4

2017

6.5

1936

6.8

1969

7.1

1986

6.9

2004

3.7

1971

6.1

2005

4.2

1932

6.9

1955

6.6

2008

7.6

2007

6.7

2010

4.8

1993

7.9