2008

6.2

1989

7.3

1972

6.5

2005

6.8

1998

4.0

1970

5.2

1977

4.3

2015

6.5

2001

6.8

1954

6.8

1997

6.1

2008

6.2

1989

6.3

1984

7.2

2008

6.7

1998

5.0

1997

4.5

2004

7.1

2001

6.2

2000

6.0