2007

6.3

2008

0.0

2000

6.8

2001

5.6

1956

0.0

1997

6.5

1998

7.4

2004

6.0

2013

0.0

1968

8.0

2016

7.0

1982

7.3

2006

5.7

2007

5.1

1998

5.9

1992

7.2

1990

0.0

2019

9.0

1977

6.9

2022

7.0