2005

5.9

1996

7.0

1978

7.5

1995

7.7

2007

6.6

1992

7.0

1978

6.0

1969

5.1

2002

6.2

1985

8.3

2006

5.5

2021

10.0

2006

6.3

2008

5.0

2020

6.7

2009

3.8

2008

5.6

1981

7.0

2014

5.4

2008

4.4