1969

5.5

1996

5.7

1980

5.0

1979

6.5

1989

5.9

2014

5.2

2016

5.6

2002

0.0

1997

6.6

2007

8.0

2008

4.2

1999

7.2

2007

5.8

2017

0.0

2020

4.7

2011

7.0

2017

7.8

1995

6.4

2024

5.5

2002

9.0