1979

6.7

2019

7.3

2017

0.0

1993

8.2

1997

5.6

1990

7.9

2012

0.0

2004

6.6

2005

7.4

1991

7.8

1995

7.6

1978

7.0

2002

7.5

2006

0.0

2000

8.5

1999

7.7

1998

7.1

2021

0.0

2006

7.1

2003

7.3