2001

6.8

2004

6.0

2002

6.0

2005

4.5

2002

6.9

2003

7.8

2004

8.1

1979

7.7

1972

6.9

1950

8.1

2015

6.4

1970

7.1

2016

5.0

2002

5.4

2003

7.2

2003

6.9

2002

7.1

2003

6.6

0.0

2000

7.2