1989

4.5

2001

8.1

1987

0.0

2002

8.0

2005

3.1

1994

7.9

1976

7.6

2000

4.0

2015

0.0

2012

1.0

2015

6.5

1996

6.4

2001

6.6

1967

7.6

2002

8.0

1984

7.1

2009

7.3

2021

5.0

1991

6.9

2004

6.0