2002

6.1

2013

8.2

2001

6.9

2006

5.1

2003

6.6

1964

5.8

1977

7.4

2007

6.9

2001

6.8

2000

7.1

1995

7.3

1972

6.2

1998

0.0

1996

6.7

1995

7.3

1969

1.0

2018

7.6

1992

6.9

1980

5.5

2020

0.0