2018

6.4

2006

6.6

1998

7.2

2006

6.7

2008

6.8

2024

8.0

1996

7.0

2004

6.8

2017

7.3

1961

7.7

2000

7.4

1976

7.8

1979

7.3

1982

6.9

1985

7.1

1990

5.8

1980

7.9

1996

5.7

2003

6.5

1988

5.7