2006

6.0

2002

5.3

1993

5.7

1998

6.7

1986

0.0

1995

7.9

1975

7.8

1991

7.2

1967

7.5

1990

7.0

1993

6.2

2002

4.4

2002

7.4

1932

4.0

1968

5.0

1990

0.0

1970

5.6

1985

6.4

2003

5.1

2018

6.4