2016

8.0

2006

5.6

1997

6.0

1984

3.9

2006

4.9

1997

6.2

1981

6.6

2000

6.0

1987

2.0

1983

6.7

1976

5.0

1986

4.1

1979

6.3

2005

5.5

1983

7.0

2010

6.6

1986

5.8

2012

5.8

1990

5.5

1993

4.0