1999

4.0

2013

6.1

2009

7.3

2008

5.7

2019

7.7

2023

6.2

1989

5.0

2015

8.0

2014

7.0

1997

6.3

2019

7.3

1965

6.3

2010

5.5

1964

7.0

2016

5.7

2023

9.2

2017

6.0

2024

6.9

2010

7.7