2017

6.2

2020

5.8

2003

6.8

1990

5.7

1984

6.7

1967

6.1

2006

6.1

1999

4.6

2015

6.5

2000

5.1

2013

6.6

1958

5.5

1980

5.9

2017

6.5

2012

5.4

2001

4.9

1953

5.9

2012

9.3

2021

5.5