1942

7.8

2011

7.3

2011

6.4

2006

6.1

2003

5.9

1988

5.5

1946

8.3

1980

8.4

1989

8.4

1951

7.7

1960

8.0

2008

6.7

1997

8.3

1999

4.9

2006

7.0

1997

8.3

1988

7.1

2016

8.1

1972

6.5

1972

7.5