1994

6.2

2014

7.0

2019

6.5

2011

6.6

1969

5.1

2009

5.9

2020

6.9

2010

6.8

1998

6.0

1988

6.5

1988

6.4

2004

6.4

1943

6.4

2003

6.8

2023

6.1

1969

6.6

2017

6.0

1978

5.9

1996

5.8

2021

5.9