2005

6.8

1994

8.7

2017

7.2

2010

8.4

2006

7.4

1980

8.2

1979

7.6

1989

7.2

1941

7.0

1999

6.9

2004

7.2

1985

8.3

2009

8.2

1999

7.2

2015

7.6

2019

8.1

2004

8.1

2013

8.0

1987

7.3

1990

7.4