2002

4.8

2005

4.9

1997

5.8

1983

5.2

2008

6.0

2007

6.5

1984

4.8

2024

5.5

2016

4.4

2014

6.3

1999

6.0

1974

2.8

1982

5.8

1985

5.0

1969

4.0

1977

4.6

1988

6.3

2005

3.7

2015

7.5

2002

5.3