1987

7.2

1988

2.7

1990

7.3

1997

6.8

1999

5.7

2016

4.0

1981

6.0

2003

7.8

1996

7.0

1997

5.9

2022

4.7

1987

3.7

1980

4.5

1986

6.4

1996

5.9