2001

4.0

2006

6.3

1996

7.0

1970

3.8

1975

3.1

1979

6.0

2004

5.3

2003

6.0

1980

4.8

1998

4.1

2002

5.6

2003

6.6

1995

6.5

2022

5.5

2004

5.2

2002

6.3

1991

4.6

1970

3.0

2005

4.9

2023

6.7