2002

7.5

2000

7.4

2005

7.7

1954

8.5

1970

0.0

1970

7.0

1998

6.5

2000

4.4

2008

7.1

2001

5.7

2000

8.1

2019

6.4

2006

6.9

1992

4.5

2013

5.6

1977

5.2

1990

6.0

2013

5.9

1991

6.2

1996

6.5