2004

6.3

2003

5.9

2019

8.5

2005

6.1

2015

7.5

2004

7.1

1996

6.6

2008

8.1

1991

8.3

2006

6.1

1995

6.9

2009

8.2

2018

7.4

1988

7.9

1987

8.1

2014

7.9

2003

7.1

1940

7.1

1997

7.9

1982

7.9