1990

5.5

1997

6.5

2005

6.2

1995

6.2

2004

6.2

1993

6.3

1994

6.8

1998

6.4

2003

6.9

1996

7.3

1986

6.1

2001

5.6

1989

0.0

2002

9.3

1954

6.0

2014

6.3

2019

6.6

2002

0.0

2003

7.0

1988

0.0