2008

4.5

1973

6.0

2013

5.8

2005

5.0

1972

6.2

1990

7.6

1974

5.9

1972

5.7

1988

5.3

1968

3.9

1989

5.5

2014

4.6

1973

6.1

2015

5.8

2000

4.0

2006

6.1

1986

6.7

2006

4.2

1977

6.3

1978

5.9