1994

4.6

1975

7.9

2003

5.7

1954

6.7

2001

5.8

2014

7.1

2008

7.6

1964

7.0

2012

6.4

1990

7.5

1998

6.2

1997

6.0

2014

6.6

1956

6.1

2009

6.0

2018

6.6

1969

6.6

1979

7.6

2008

5.2

2014

6.2