1991

4.0

2003

1.8

2004

5.5

2005

6.3

2005

5.8

1969

3.8

2005

5.2

2017

4.3

1999

5.3

1992

6.2

1995

4.1

1992

5.9

2010

4.8

2009

6.6

1990

3.2

1974

6.0

2008

5.9

1998

1.5

1970

4.8

1974

4.5