1986

7.3

1976

4.9

1976

5.6

1965

6.8

1988

5.9

2004

9.9

2009

6.5

1978

6.1

2017

6.9

1970

6.4

2010

7.3

2013

6.7

1964

7.0

1966

6.4

1974

5.9

1985

6.9

1965

6.4

1965

7.2

1978

6.8

2017

7.0