2020

10.0

2019

8.7

2012

9.3

1996

8.0

2010

6.7

1994

6.5

1972

7.4

1992

6.2

2015

6.4

2009

6.3

2007

6.2

2014

6.8

2010

7.1

2012

4.9

1988

4.1

2006

5.9

1973

7.2

2022

7.1

2023

7.1

2022

8.3