1995

6.3

2014

3.6

1984

2.5

2024

6.6

2012

7.0

2013

6.1

1964

5.7

1997

6.8

1974

4.8

1990

4.6

2008

6.6

1994

5.9

2014

5.6

1990

6.7

1996

6.5

1991

6.3

2004

7.3

1946

5.6

1988

6.3

1981

7.2