1989

5.4

1999

5.9

2012

6.0

2008

5.8

1928

6.0

2011

7.1

2018

7.6

1959

6.1

2004

5.9

1990

6.3

1998

4.8

2024

7.4

2009

6.1

2000

7.5

2007

7.2

1985

6.2

1976

6.3

1973

5.6

1989

7.0

1946

5.9