1953

6.9

1967

5.1

1967

6.9

2017

6.3

1979

6.2

1981

5.9

1992

7.8

2005

6.2

1992

6.6

1964

5.6

2005

5.1

2001

5.4

1987

3.9

1994

4.3

2000

5.7

2007

3.5

1996

4.0

1983

7.0

2020

7.3

2016

10.0