2020

6.9

2016

7.2

1992

6.2

2022

5.5

2011

7.1

2017

5.7

1998

5.2

2018

6.9

2015

5.3

2017

7.0

2015

6.7

2013

7.4

6.0

1987

6.5

1999

6.0

2015

4.4

1967

6.6

2015

6.4

2010

6.4

2016

5.7