1994

4.6

1983

6.2

1987

4.3

1996

6.6

2002

4.9

1989

6.8

1980

0.0

2008

6.5

2015

5.8

1980

5.8

1983

6.7

1991

6.1

1999

5.5

1985

5.4

2003

6.8

1985

6.2

2003

5.1

2005

4.4

1968

6.5

1989

0.0

2004

4.8

2023

5.6

1997

4.8

1990

4.8

2000

6.9

2008

6.2

1997

0.0

1960

0.0

1982

6.2

1992

6.1

1977

4.5

1976

6.8

1979

6.0

1987

6.0

1977

5.5

1988

7.5

1998

3.0

2012

7.7