2021

6.7

2012

8.2

2009

7.6

2012

7.4

1998

7.8

1995

8.4

1972

8.7

1994

8.7

2000

8.2

1991

8.3

1989

7.8

2018

8.2

1984

7.7

2012

6.6

1979

8.2

2001

7.9

2005

7.0

2023

8.1

2010

8.4

2015

7.8