1959

7.9

1997

7.4

2012

9.1

2013

10.0

2003

6.7

2024

6.6

1986

7.5

1989

8.3

1972

8.7

1948

7.9

2006

6.9

2005

7.0

1962

7.7

2020

0.0

2003

7.8

1928

8.0

1976

7.4

1995

8.4

2001

6.0

2025

0.0