2007

7.5

2012

6.3

2003

6.2

1990

6.0

1987

4.1

1994

5.7

2010

6.2

1895

5.5

2005

6.2

1976

6.6

1981

6.7

2011

7.1

1996

6.0

1979

4.7

1959

6.1

1989

7.1

2010

6.3

2015

6.6

2009

6.5

1989

6.3