1990

6.1

1999

5.1

2017

6.6

1996

5.8

2022

7.1

1986

6.2

2013

6.5

2017

6.9

1920

7.3

1989

5.5

2020

6.5

2013

6.7

2012

5.5

2007

5.5

2014

6.3

2007

10.0

1993

5.4

2009

4.8

1988

6.1

1996

6.5