1993

6.3

2019

7.6

2011

8.1

1986

5.8

2024

8.0

1984

7.8

2007

1.0

1971

10.0

2021

3.7

1999

6.8

2014

7.0

2015

8.7

2004

7.4

1974

5.0

1979

7.7

2016

7.0

2010

6.8

2016

6.7

2020

6.8

2009

7.9