2011

0.0

2008

5.9

2014

6.4

1978

5.8

1961

6.0

1993

5.5

1999

7.0

2009

6.9

2000

5.2

1995

8.1

2002

8.4

1993

8.6

2006

6.0

2001

6.2

2005

5.9

1994

7.4

1991

7.6

1997

6.5

2019

7.0

2007

7.9