1949

6.2

2024

6.8

2002

5.4

1991

7.0

1999

5.9

1934

6.7

2010

5.5

2014

5.7

2020

6.7

2023

7.7

2009

6.7

1997

6.9

1971

6.8

2023

7.0

2010

6.0

2004

6.6

1970

6.0

7.8

1991

7.1

2007

6.2