2021

6.2

2014

6.4

2020

6.1

1997

6.1

1993

5.6

1984

9.2

2019

5.7

2008

7.3

5.4

2020

6.0

1997

5.9

2016

6.9

2002

5.0

2019

7.5

2011

7.2

2004

6.0

2021

7.3

2012

5.5

1931

5.8

2019

5.4