1980

0.0

2002

6.3

1998

7.2

2007

6.6

2013

7.6

2003

6.6

2011

7.4

1997

6.6

2013

8.0

2013

9.0

1955

0.0

2012

5.6

1992

0.0

2023

0.0

2003

6.6

1999

7.9

2005

8.1

2004

7.0

2005

8.3

1994

8.4