2011

6.6

2000

8.2

2015

7.7

1999

8.0

2018

6.4

1984

7.2

1975

7.7

2014

5.1

2017

7.3

1989

5.0

2007

6.0

2003

6.5

2011

6.1

1963

7.2

2015

7.9

2014

7.9

1992

8.1

2023

7.5

2015

7.5

2009

7.4