2017

6.3

1996

7.0

2007

6.4

2023

0.0

2003

6.6

2001

7.4

1991

5.9

1973

3.5

1991

4.6

1970

3.8

2004

5.3

1980

4.8

2006

6.3

1970

3.0

2002

6.3

2008

6.8

2010

5.1

2000

4.6

1989

6.0

2004

3.8