1999

6.5

1982

7.2

2009

6.0

2002

6.1

1994

7.3

1995

6.2

1988

6.9

1995

7.3

1993

4.5

2017

6.6

1989

5.2

2016

4.5

2006

6.1

1931

7.2

2003

7.4

1986

6.4

2000

5.9

1999

6.8

2002

6.6

1989

6.2