2003

7.8

2007

4.2

2000

3.7

1997

0.0

2018

4.4

2014

5.3

2001

5.1

1968

3.5

1969

4.5

1984

1.0

2014

6.3

1988

7.1

2009

7.5

1993

7.7

2002

5.5

1969

3.5

1975

5.6

2004

5.5

1995

3.8

1960

6.1