2003

3.7

1996

3.0

1991

2.4

1990

4.7

2020

6.0

1978

5.5

2011

5.3

1979

9.5

0.0

1957

6.1

2005

8.0

2009

8.5

2005

5.2

2019

6.0

2014

8.0

2011

3.4

1967

2.8

1975

3.0