1966

6.3

1967

6.4

1928

6.0

2007

9.8

2005

9.9

2003

8.6

8.3

2009

7.9

2014

7.8

1964

7.0

2011

7.0

2016

4.5

2015

7.3

1986

5.7

2012

7.6

2016

7.7

2019

10.0

2013

7.6

2013

6.0

1989

5.0