2009

6.2

2017

6.0

1977

5.4

2001

6.8

2020

7.4

2017

6.6

2023

5.7

2008

4.5

2016

6.7

1966

7.6

2010

5.5

1971

5.9

2023

6.8

1999

4.6

1973

5.9

1967

6.1

1984

7.2

2006

7.0