2014

4.6

2017

5.5

2002

5.0

1999

7.4

2003

5.9

2004

7.2

2006

7.0

2004

4.6

2003

6.0

2005

5.9

1976

10.0

1988

5.0

1995

4.4

1998

5.7

1979

6.0

2003

5.0

1981

5.4

1983

3.5

1975

3.8

2002

6.6