2005

7.4

2002

7.6

1995

0.0

1985

7.2

2000

7.1

1989

7.2

2002

6.1

1975

6.6

1958

0.0

1943

6.1

2009

6.0

2015

0.0

2012

7.6

2001

6.7

2004

5.9

1968

6.0

1966

0.0

1960

6.6

2020

6.9

2023

6.9