1984

7.2

2003

6.3

2008

5.8

1967

6.1

1975

6.4

1996

6.9

1986

6.2

1993

6.6

2017

6.1

2014

5.7

2020

6.5

1999

4.6

2015

6.1

1969

6.6

2017

6.2

2017

5.6

1988

6.3

2019

6.7

2005

5.2

2005

5.2