2016

7.4

1997

7.9

2014

8.5

2019

7.8

2023

7.0

1994

8.7

2016

7.9

2017

7.3

2015

7.6

2015

7.6

2021

7.8

2010

8.2

1989

8.3

1994

8.5

2013

6.9

1968

8.1

2010

7.7

2000

7.4

2019

8.1

2015

7.3