1998

8.3

1976

8.1

1996

7.5

1998

6.6

2018

6.9

2024

10.0

2013

10.0

2023

6.7

2015

4.0

2021

7.5

1989

7.2

1999

7.7

2006

5.7

1964

7.6

2004

6.2

2002

6.3

1989

7.1

2006

6.6

1995

8.0

2016

0.0