
Jan 
Feb 
Mar 
Apr 
May 
Jun 
Jul 
Aug 
Sep 
Oct 
Nov 
Dec 
1980 
N/A 
N/A 
N/A 

N/A 
N/A 
N/A 
N/A 
N/A 
N/A 
N/A 
N/A 
1981 



N/A 



N/A 


YES 
N/A 
1982 


N/A 

N/A 

N/A 

N/A 



1983 
N/A 

N/A 
N/A 
N/A 

N/A 
N/A 
N/A 
N/A 

N/A 
1984 
N/A 
N/A 
N/A 
N/A 
N/A 
N/A 


N/A 
N/A 
N/A 
N/A 
1985 
N/A 
N/A 
N/A 
N/A 
N/A 


N/A 

N/A 
N/A 
N/A 
1986 
N/A 
N/A 
N/A 
N/A 








1987 






N/A 





1988 








N/A 
N/A 


1989 
N/A 



N/A 
N/A 




N/A 
