2010

6.6

2015

6.0

2011

7.1

1986

6.7

2006

5.1

2021

7.4

2020

7.0

1969

7.1

2009

7.7

2002

8.4

2012

9.4

1992

6.3

2019

5.8

1931

7.3

1951

7.4

2000

7.2

1997

6.1

2004

5.7

1966

7.0