1982

7.9

2007

7.6

1957

5.8

2005

5.6

1971

7.0

2016

4.7

2001

6.3

2001

7.2

1970

6.1

2005

6.7

2018

6.0

2004

7.3

2001

6.1

1985

1.0

2000

5.7

1994

5.2

1986

7.4

1984

6.1

2018

4.1

2010

6.9