1999

8.2

2008

7.8

1989

6.1

2010

5.0

1992

6.3

2017

5.7

1993

5.4

1985

4.9

2009

5.4

2000

9.4

2024

6.3

1966

6.2

1989

5.1

2012

8.4

1952

6.7

1967

6.5

2000

6.7

2003

6.6

2000

6.7

2009

5.6