1995

7.7

7.8

1999

7.2

2007

7.7

1999

7.2

2014

5.9

1928

8.0

1955

7.5

2017

6.2

2023

6.8

2015

6.3

2002

7.4

1901

7.1

2023

9.4

1983

7.0

2014

6.0

2011

6.2

2012

6.6

2008

5.1