1966

6.1

1977

7.4

2015

5.9

2020

5.5

2003

6.4

2016

6.7

1989

9.3

1996

8.0

2010

5.0

2009

5.6

2024

6.3

2009

8.5

1985

6.2

2017

5.8

2006

6.6

2017

6.0

1990

7.5

2020

6.7