2001

7.2

2013

6.6

1993

5.5

1997

6.3

2019

8.7

2015

6.1

2009

6.9

2022

5.6

2020

6.7

1984

7.3

1973

5.9

2010

6.6

2023

7.2

2022

7.2

2009

7.4

2012

6.3

2010

5.1