1995

5.4

1997

4.4

1978

7.1

2012

6.7

2005

7.0

2017

5.7

1984

7.5

2021

10.0

1966

6.4

2024

7.0

2015

5.5

1995

6.3

1980

6.7

2003

6.0

1973

7.0

2017

6.8

2007

5.5

2012

6.2

2014

6.1

2007

0.0