2021

7.8

2020

6.9

2003

5.6

1979

6.1

1985

6.2

1963

7.0

1980

6.3

1988

5.5

1990

6.5

1997

7.5

2011

7.2

1964

7.0

2013

7.3

2005

7.2

2013

5.6

2008

6.6

2010

5.8

1993

6.2

1992

7.4

2009

7.2