1999

5.9

2020

5.2

2009

5.3

2005

4.6

1988

7.7

2023

6.9

2011

6.7

2001

6.2

2025

6.0

1944

7.4

1983

5.6

2021

6.3

1982

6.9

2023

5.7

2002

6.0

1972

6.2

2020

4.7

1959

6.1

2014

6.7

1996

6.5