2010

4.2

2005

5.2

1989

6.2

1975

6.4

1977

6.4

2021

6.9

2021

5.9

1988

6.1

1996

5.8

2013

8.4

1970

7.7

2001

7.2

2023

6.0

2000

7.4

2022

6.5

1960

7.2

1989

7.3

1995

5.6

2006

6.4

2022

6.6