2004

7.3

1985

7.1

1994

6.5

1982

5.2

2010

6.3

2007

6.7

1997

6.2

2017

7.2

1990

4.5

1977

5.6

1973

6.1

2019

5.0

2021

5.5

1982

5.4

1971

6.1

1976

5.0

2013

4.3

2024

0.0

2009

5.9

2015

7.8