1965

5.5

2006

5.9

1968

6.9

2010

5.3

2012

6.4

2010

7.0

2021

6.1

2023

6.3

2023

6.9

1994

6.1

2021

6.1

2022

5.0

2023

6.5

2024

6.5

2009

6.5

2011

6.6

2007

7.4

1982

5.8

2014

8.0

2001

6.9