2016

6.6

2013

6.5

2002

6.5

1980

8.4

2020

6.8

2017

7.8

2012

6.9

2016

6.7

1980

5.9

1990

6.3

1993

6.1

1988

6.1

2008

5.6

2020

6.5

2009

7.5

1965

6.4

2007

7.0

1993

6.4

2023

9.3

2022

9.9