2007

6.3

2012

5.8

1965

3.0

2016

7.1

2014

7.8

2011

6.2

1960

7.2

2021

7.1

2023

7.3

2015

5.3

2008

6.7

1989

9.2

1999

9.1

2018

6.4

1989

6.1

1972

4.0

2015

6.8

2012

6.9

2017

5.9