1953

7.1

2001

0.0

1954

6.6

1954

5.3

2006

6.5

1997

5.7

2007

6.5

1973

7.5

1989

6.1

2003

6.8

2016

5.6

1998

6.8

1999

6.1

2001

6.7

2002

6.2

2001

6.8

1988

6.2

1964

6.0

1996

5.5

2007

5.3