1966

6.1

1993

6.5

1972

8.7

2019

6.5

1999

5.9

1994

6.6

2000

5.2

1998

6.1

2003

6.3

2015

6.1

2014

6.9

2015

6.4

1992

6.0

2019

7.3

1996

6.9

2002

7.4

2020

6.5

1954

6.7

2020

6.7

2010

6.8