2004

9.9

2009

6.2

2008

4.5

2023

4.1

2018

5.9

2011

6.5

2004

7.1

2024

7.2

1990

6.9

2015

5.6

1999

7.2

2012

4.7

2008

5.9

1955

7.2

1999

7.5

1987

5.3

2017

6.1

2016

6.8

1959

6.6

2021

6.0