2012

10.0

2000

6.3

1983

6.5

2013

6.7

2013

8.1

2006

7.0

1978

6.9

5.1

1976

4.9

1987

7.1

1997

5.0

1999

5.1

2019

8.0

2009

5.8

1990

6.8

2000

7.3

1961

8.3

1977

7.3

2003

6.2

1947

7.0