2006

4.7

2015

6.2

2003

5.9

2002

5.3

1999

5.7

1972

6.2

2023

0.0

1985

7.2

2003

7.0

1972

6.4

1965

6.3

2004

5.9

1992

6.2

1970

6.8

1987

7.1

1959

8.1

1938

7.4

2009

5.5

2019

6.0

1991

6.3