1986

5.9

2015

6.8

2021

6.6

2001

7.0

1981

6.5

1978

7.2

1978

6.6

2023

6.9

0.0

2011

7.1

2013

3.0

2018

7.0

2019

7.7

2019

8.3

2018

7.4

2017

6.0

2008

7.9

1987

7.0

1980

7.8

1999

7.5