2015

5.8

1999

8.4

1972

7.1

2001

7.4

1995

6.6

1990

7.8

2002

7.3

1972

7.8

1962

8.0

1940

7.8

1987

8.1

2004

7.9

1915

6.0

2001

6.2

1990

7.0

1999

8.5

2003

7.2

1993

6.2

1975

8.4

1995

8.0