1966

7.3

1999

6.7

1993

7.0

1994

6.1

2000

6.8

1994

6.5

1997

6.6

2024

0.0

2016

6.1

1925

1.0

1973

7.9

2017

10.0

1961

3.8

2011

6.7

1998

7.3

2006

7.0

2017

7.0

1952

5.8

1954

4.5

2007

5.7