2005

7.3

1998

5.5

1995

6.5

2004

7.2

2002

5.3

2018

5.8

1975

6.6

2014

4.2

1992

6.8

2019

6.1

2018

6.4

1980

7.1

1988

7.7

2007

7.9

1990

6.4

1974

7.5

2000

4.8

2022

5.7

1990

5.7

2008

7.6