1984

6.2

1997

1.0

1989

0.0

2009

6.3

2004

7.8

1982

4.5

2014

4.6

2023

6.3

1987

5.0

1998

6.9

2022

8.5

1972

8.6

1968

7.0

1994

6.5

2008

8.9

1999

8.6

2006

8.2

2004

8.1

2011

7.6

2008

8.4