1964

5.4

1973

7.0

1976

6.6

2003

7.8

1978

0.0

2015

7.7

1979

6.8

2023

6.0

1984

7.3

1990

7.4

2001

7.6

1999

7.9

1951

5.0

2007

8.1

2021

0.0

2009

7.5

1991

6.1

1980

5.5

1978

7.5

2017

7.7

1999

4.0

1977

6.3

2001

6.8