2005

3.4

2021

8.1

2011

6.8

1984

6.4

2022

6.3

2012

8.0

2023

6.9

1999

8.0

2011

7.1

2017

4.6

2010

7.7

2008

6.6

2003

6.4

1967

6.6

2011

7.5

1953

7.3

2003

6.0

1961

6.9

1972

7.2

1977

6.2