1996

7.5

2020

5.8

1993

7.2

2009

5.7

7.6

2003

5.0

2018

7.0

1998

7.4

1989

7.9

2021

6.6

2016

6.8

1975

6.9

1993

4.9

2004

7.1

1970

5.3

1981

6.2

1972

6.2

1949

8.0

2016

7.3

1993

6.3