2002

5.4

1997

5.4

1999

6.4

2002

4.3

2008

6.3

2002

5.7

2000

5.7

2001

6.3

2004

6.2

1994

5.2

1996

5.4

1993

6.2

2017

5.7

2005

6.7

1997

6.6

1935

7.3

2009

6.0

1998

4.4

1964

3.0

1996

6.5