1994

5.0

1997

3.8

2004

5.9

2010

7.6

1988

4.3

2013

4.4

1999

5.0

2010

4.7

2007

4.0

2017

7.5

1995

5.3

1991

0.0

1973

4.7

1999

0.0

2022

6.5

2002

7.2

2023

6.2