That would be logical with the total of 54k EU case numbers and the 35% additional selectees vs dv13: 54/1.35 = 40k.
On the other hand, who really knows what will happen? When I see that there has been 'only' 1269 successful cases in 3 months of interviews (Oct thru Dec), this gives some hope to the high CN numbers.
Looking quickly at the table for EU (thanks Raevsky btw, you did a great job again):
4062 cases in the CEAC database
9219 aplicants with derivatives
=> 2.27 applicants for each CN case
Don't forget the AOS cases that are not there. They normally represent 5-10% of all dv visas. Refusal rates usually are in the same order of magnitude.
All this being said, we can extrapolate for the remaining months, taking whatever assumption we like
We need to stay optmistic in these early days of 2014