2003

6.0

1969

6.6

1976

3.1

1959

4.2

1975

5.8

2000

7.4

2005

6.1

2004

5.6

1987

4.5

2004

5.2

1996

6.6

1964

6.3

2010

3.8

2006

4.7

2004

6.8

2000

6.3

2006

6.4

2014

6.3

2025

6.7

1989

5.4