1996

6.5

2009

6.6

1967

5.3

2002

6.4

1994

1.0

2000

0.0

2001

3.0

2021

2.5

1992

7.0

2014

4.7

1970

6.2

2009

6.1

2005

6.0

2011

0.0

1995

4.3

2015

7.0