2015

8.0

1990

6.1

2013

5.5

2014

8.0

2011

6.2

2006

5.5

1995

5.4

2004

5.9

1968

8.1

1978

7.4

1997

6.5

1994

6.2

1991

8.1

2013

5.8

1988

5.2

1994

8.3

1989

5.9

1993

7.7

1999

6.4

2010

6.2