[xsl] XSL - Counting the number dropshipid nodes processed

["Challa, Harsha" <hchalla@xxxxxxxxxxxx>]

Hello xsl gurus,

I have the following code which needs to be done in xsl.
I am processing a couple of dropshipid nodes. I want to keep a counter and
print the counter as I process the nodes using XSL.  
(Similar to whar we do in C programming language etc/
i = 0 (initiatise)
print (i++) 
)

Can someone let me know how this can be achieved

XML
<dropshipid>xxx</dropshipid>
<dropshipid>yyy</dropshipid>
<dropshipid>yyy</dropshipid>

thanks
Harsha