2002

6.4

2010

1.8

2004

6.7

2005

4.9

1972

6.2

2014

6.3

2004

5.3

1992

7.4

1999

7.5

2006

7.4

2017

5.9

1973

5.0

1930

6.8

1976

4.9

1982

6.2

1964

5.9

1969

7.2

2018

7.0

1980

4.4

1975

5.0