如何·使用db ，dd，dw？

assume cs:codesg
data segment
db '1975','1976','1977','1978','1979','1980','1981','1982','1983'
db '1984','1985','1986','1987','1988','1989','1990','1991','1992'
db '1993','1994','1995'

dd 16,22,382,1356,2390,8000,16000,24486,50065,97479,140417,197514
dd 345980,590827,803530,1183000,1843000,2759000,3753000,4649000,5937000


dw 3,7,9,13,28,38,130,220,476,778,1001,1442,2258,2793,4037,5635,8226
dw 11542,14430,45257,17800

data ends

table segment
db 21 dup('year summ ne ?? ')
table ends

static segment
    dw 8 dup(8)
static ends

codesg segment
start: mov ax,static
       mov ss,ax
       mov sp,16
       mov ax,data
       mov ds,ax
       mov ax,table
       mov es,ax
       mov bx,0
       mov si,0
       mov di,0
       mov cx,21

 
   s0: push cx
      
      
             mov al,[bx+si]
             mov es:[bx+0],al
             inc si
             mov al,[bx+si]
             mov es:[bx+1],al
             inc si
             mov al,[bx+si]
             mov es:[bx+2],al
             inc si
             mov al,[bx+si]
             mov es:[bx+3],al
             inc si
            
             mov al,' '
             mov es:[bx+4],al
             sub si,4
         
             mov ax,[bx+84+si]
             mov es:[bx+5],ax
             add si,2
             mov dx,[bx+84+si]
             mov es:[bx+7],ax
             add si,2
                     div word ptr [bx+di+168]
                     mov es:[bx+13],ax
                     
             mov al,' '
             mov es:[bx+9],al      
            
             mov ax,[bx+di+168]
            
             mov es:[bx+10],ax
             add dx,2
             mov al,' '
             mov es:[bx+12],al
         pop cx
         add bx,16
         sub si,16
         sub di,16
         loop s0

 codesg ends
end start