1972

6.1

2008

6.6

2017

3.7

1997

6.6

2020

6.0

2004

5.8

1994

6.5

2014

8.3

1992

4.0

2025

6.4

2007

5.6

2009

5.7

1999

6.0

1972

4.8

1942

6.4

1958

4.8

1993

6.7

2024

0.0

2008

5.5

2015

4.5