2006

7.8

2005

8.0

1999

7.6

2013

6.8

1994

6.8

2006

7.7

1971

7.6

1996

8.5

2007

1.0

2004

6.8

2013

6.6

2001

2.0

2020

0.0

1978

4.0

1993

0.0

1969

7.2

2003

0.0

1996

7.3

2012

5.5

2021

0.0