1988

4.2

2023

10.0

2003

6.0

1988

6.2

2008

6.5

2001

5.8

2005

6.8

2002

3.9

1973

7.5

1991

6.9

1993

6.6

2008

6.5

2001

6.0

2003

4.1

2003

6.8

1964

8.1

1999

6.3

1997

6.5

1999

6.1

1999

5.7