2006

6.5

2020

6.7

1986

5.8

2003

6.2

1975

6.9

1985

6.9

2013

6.8

1996

8.0

2007

6.3

2012

9.4

1992

6.1

2015

6.4

2022

5.1

2023

5.8

2020

6.4

2017

8.1

1968

4.7

1972

6.5

2020

6.4

2022

5.5