2005

5.7

1994

6.0

2005

6.0

1992

5.3

2004

5.5

1978

7.4

2010

6.3

2006

6.2

1989

6.8

1993

7.0

1994

5.1

1991

7.1

1943

5.8

1944

5.5

1996

4.8

1985

7.2

1961

4.2

1952

7.4

1970

5.6

1943

6.3