1967

6.5

2001

6.1

2025

6.2

1998

5.1

2023

7.3

2008

5.7

1987

6.9

1972

4.0

6.1

2007

5.7

1967

6.6

2016

7.6

2017

7.3

2017

5.7

2023

6.0

2010

6.4

1985

6.9

2021

5.7

1975

6.9