2002

6.2

1997

6.8

2007

7.6

1998

7.2

2004

6.5

1964

5.0

2016

5.6

1974

6.8

1967

4.4

2006

7.0

1999

6.4

2016

4.5

2000

6.1

1999

6.2

1972

7.3

1998

7.5

1986

6.7

2005

6.7

1963

6.6

1988

5.4