1992

6.0

2005

6.2

2004

6.3

2001

7.5

1979

6.0

1971

4.8

1995

7.2

2006

5.2

2000

5.0

2007

5.6

2005

7.2

1986

6.7

2016

6.4

2001

6.4

1970

4.1

1995

6.2

1999

5.2

1982

6.0

1961

4.6

1975

3.1