1993

6.1

1995

5.9

1990

6.2

2007

7.0

2019

6.6

2008

5.2

1952

6.5

2006

4.8

1972

6.5

2017

4.0

1992

4.0

1982

6.9

1987

6.3

2006

4.6

2023

0.0

2009

2.0

2016

4.7

1988

0.0

2008

6.9

2016

0.0