2006

6.2

1996

4.8

1985

7.2

2005

5.7

2018

6.3

2007

6.0

1987

7.3

1969

3.0

2005

6.0

1989

6.8

1993

7.0

1994

5.1

1991

7.1

1952

7.4

1970

5.5

1955

4.3

1950

6.8

1964

7.3

2007

6.1

1925

5.4