1952

6.3

1987

6.5

1976

7.4

1991

6.6

1996

6.0

2023

6.1

2022

5.7

1959

6.0

2024

0.0

1961

5.5

2020

3.3

1985

0.0

1985

7.4

1973

7.0

2019

8.0

2014

7.1

2009

0.0

2009

8.0

2005

4.8

2011

6.4