2000

7.7

2006

7.6

1972

4.0

2000

2.1

1931

7.2

1997

7.0

1921

8.2

2004

8.0

2014

6.7

2001

6.9

1960

8.2

1999

7.7

1971

7.6

1958

8.2

2003

7.3

1964

7.1

2015

5.9

2002

6.6

2000

7.1

1958

7.6