1994

6.9

1994

6.2

2003

6.3

1995

6.9

2000

6.0

2001

6.8

2009

6.2

1965

6.3

1962

3.6

2000

6.4

1922

6.1

1975

6.3

1998

5.5

1998

5.4

1990

7.5

1971

6.0

2007

5.3

1968

6.4

1968

7.7

2017

4.5