2009

4.6

2005

4.7

1999

5.7

1976

4.9

1974

3.6

2005

3.6

2000

4.0

1981

5.7

2019

6.4

1998

5.2

1973

5.1

2001

5.3

1994

4.0

1981

3.6

1975

5.6

1994

4.3

2002

4.0

2000

8.0

2004

1.3

2015

5.3