2017

7.8

2020

5.9

2002

6.4

2003

6.0

2000

4.4

2002

6.4

1962

6.8

1973

7.3

1992

7.3

1995

7.9

1985

7.0

1952

5.0

2014

6.1

1981

7.2

2004

5.3

1970

7.6

1999

7.1

2006

6.4

2009

9.7

1999

6.5