1985

7.1

2004

7.3

2004

7.1

1994

6.5

1977

5.5

2013

4.3

2007

6.7

2020

6.3

2021

5.5

2010

6.3

0.0

1982

5.2

2020

6.4

1997

6.0

1976

5.0

1982

5.4

1973

6.1

1990

4.6

2017

0.0

2009

5.9