2001

6.7

1999

8.4

2012

7.9

1966

6.4

2005

7.6

1990

6.7

2024

5.9

2019

5.1

2009

7.7

2007

6.2

2021

0.0

2020

8.0

1994

7.7

2022

0.0

2022

6.9

1978

8.0

2002

7.4

2003

7.2

1984

7.8

2013

9.3