2002

5.3

1999

6.8

1991

5.7

1978

7.2

1968

6.3

1982

6.6

2014

5.6

1903

7.0

2004

6.4

2009

5.7

1987

6.0

2003

5.7

2000

5.7

1972

7.1

1993

6.2

1988

7.8

2020

9.5

1999

6.5

2001

6.0

2004

6.0