1994

6.4

2005

6.4

2014

5.7

2022

6.6

1956

7.7

1972

7.1

1988

7.8

1991

7.6

1969

6.0

2005

6.7

1981

7.2

2007

6.3

2008

6.9

2006

6.3

1997

5.8

2002

6.7

2018

6.1

2016

5.4

1999

5.6

2019

5.6