2008

7.5

2001

6.2

2002

7.3

2003

6.7

2001

6.7

2002

8.0

2003

7.4

2002

6.6

1999

7.4

1994

6.8

1961

7.3

2005

6.9

1996

6.6

1992

5.8

1996

6.4

1994

4.5

1988

8.0

2017

6.1

2019

7.0

2001

0.0