1999

6.3

1997

6.7

1982

6.1

1995

5.7

1957

7.0

2014

4.7

2006

8.2

1991

7.3

1993

6.1

2021

6.9

1929

7.5

1999

6.7

1998

6.8

2005

6.9

2002

6.9

1993

7.5

2009

5.8

2023

6.3

2017

7.0

0.0