2021

6.6

2022

5.4

2013

7.0

2004

6.9

2015

7.3

1998

8.1

2018

8.2

2017

7.6

1999

8.4

2018

7.5

2018

6.4

2017

6.7

1994

8.7

2019

7.7

2016

7.9

2014

8.5

1972

8.7

1958

8.2

1980

8.2

2001

7.9