1934

4.1

1999

8.4

1972

7.1

2001

7.4

1995

6.6

1990

7.8

2002

7.3

2006

6.7

2012

5.0

1940

7.8

1987

8.1

2004

7.9

1984

7.5

1996

8.0

1994

7.4

1977

7.1

2017

7.4

1998

7.2

2000

6.5

1958

6.6