2014

7.4

2001

5.8

1982

7.6

1989

6.7

2015

6.7

2011

7.0

1988

6.1

1987

6.2

2004

6.2

2013

4.5

1976

7.5

1982

5.9

1962

6.9

1995

6.0

2004

6.0

1979

7.6

2014

5.8

1989

7.3

1968

6.5

1985

6.8