1993

7.4

1987

7.6

1990

8.5

2018

6.3

1980

5.7

1994

6.0

2009

7.1

2007

5.1

1974

6.5

2021

7.1

1963

0.0

2014

4.4

2023

0.0

2023

10.0

2005

7.0

1982

0.0

1924

0.0

1982

7.6

2001

7.5

2004

7.3