2004

9.9

2006

6.9

1999

7.6

1990

6.1

2018

6.7

1951

7.2

1987

7.4

2000

6.9

2002

10.0

2008

5.3

2014

6.6

2010

5.1

1974

7.0

1989

7.9

2018

7.2

1999

7.1

1968

7.3

2013

6.8

2003

6.7