1959

4.0

1999

6.1

1993

6.2

1988

6.7

2004

6.4

2003

6.0

1994

5.9

2003

6.5

1926

7.9

2021

6.9

1964

0.0

1994

6.3

1981

7.2

1985

6.2

2007

5.4

2002

6.7

1994

6.8

1948

5.0

2008

7.3

1998

4.0