2018

0.0

2006

5.9

2003

6.0

2005

6.8

2006

7.0

2001

7.3

1997

6.8

2005

6.7

2005

6.8

1986

7.1

2007

6.8

2002

6.6

1999

6.7

1992

7.4

2016

7.3

1972

3.7

1951

5.0

2001

7.4

1991

5.9

2003

7.2