1994

8.5

1996

7.0

1998

6.7

1986

0.0

2002

4.4

1999

6.8

2000

6.4

2003

6.1

1967

7.6

1940

8.0

2007

5.6

2001

6.2

1990

6.7

1993

6.7

1976

0.0

1996

7.9

2006

7.4

2025

0.0

1970

5.0

2021

4.8