1997

6.8

2004

6.9

2005

6.7

1994

6.7

1933

0.0

1972

3.7

2003

6.4

1990

6.7

1997

6.1

1976

3.3

1992

0.0

2019

6.6

1995

6.8

1988

5.6

2004

6.3

1973

2.0

2005

6.2

1952

7.3

2002

5.5

2001

6.2