1985

6.1

2018

6.5

2012

9.3

6.6

2024

7.2

2010

7.9

1972

6.3

2015

6.6

1975

7.0

2011

6.4

1985

6.8

2024

6.9

1953

4.8

1993

6.6

2023

6.4

2018

6.3

2015

6.6

1992

6.4

2020

6.4

2024

6.1