2023

8.7

2024

9.9

1991

6.7

1999

8.0

2020

7.0

2016

7.9

1980

7.2

2011

6.5

1988

6.1

2014

6.1

1989

7.4

2010

7.1

1997

6.5

2014

6.5

1990

6.0

2012

8.0

2007

5.1

2013

5.8

2011

7.1

2015

7.3