2003

7.2

1997

8.3

1984

7.8

2002

7.5

2015

9.0

2021

8.6

1968

6.0

2023

6.8

2001

6.6

1999

8.4

2011

0.0

1966

6.1

2005

7.7

2006

9.0

1990

7.0

2013

8.2

2014

6.3

2014

8.1

2014

7.5

1994

7.7