1992

3.3

1981

7.0

1976

6.6

2001

7.5

2017

6.0

2014

6.8

1999

6.0

2022

5.0

2016

6.3

2023

7.7

2008

5.6

1969

4.6

2001

5.9

1990

7.3

2005

5.5

2008

5.0

1983

6.6

2011

0.0

2002

6.5

1963

1.0