2019

0.0

2009

5.3

2014

5.4

1999

6.5

1995

6.7

1992

6.7

2018

8.2

2013

2.5

1977

6.1

2001

4.9

1987

6.1

1991

6.7

1994

6.4

2001

6.6

1999

6.9

2010

6.8

1988

7.1

2002

6.1

2002

6.2

2007

4.6