1980

6.6

1982

6.4

1991

7.3

1995

7.3

1986

7.1

1999

7.5

2004

6.3

1979

8.1

1958

6.6

2019

0.0

2017

7.0

1973

0.0

2011

6.7

2006

5.1

2000

4.8

2009

10.0

2022

10.0

2003

7.1

2000

5.2

1993

7.2