1961

7.7

1916

6.6

1964

6.2

2001

6.2

2003

5.8

2006

7.3

1961

7.2

2004

7.1

1937

0.0

2000

6.2

2004

6.3

1998

6.7

1991

7.7

1968

3.0

1992

6.6

1987

5.6

1939

7.2

1989

6.1

2016

7.0

2002

7.7