2000

7.6

1990

7.5

1993

7.8

1989

7.8

1990

7.5

2005

6.7

2015

0.0

2004

6.4

2007

5.8

1960

0.0

2019

7.6

1967

7.7

2008

4.0

1999

5.3

1984

7.1

1936

7.1

1968

6.6

1932

5.0

1952

6.3

1971

7.1