You don't need to be a shareholder to get this information.
Here is the link to the most recent FY annual report.
http://www.nintendo.co.jp/ir/pdf/2008/annual0803e.pdf
It states in the report that because the operate predominantly in one business category, “the electronic entertainment products” that they are not required to break out the other segments. I didn't read the whole report so I don't know if they comment on their ancillary lines. The Pokemon Company is listed as a affiliated company and that the equity method is applied which basically is fancy accounting that means that because they own part or all of it that the results are included in the total numbers.
Out of curiosity I looked at the Hasbro report to see if they give any detail on Wizards of the Coast or MTG and they just make a brief mention that international sales were down.
I did not bother to go looking at the Konami website but you could check there for Yu Gi Oh.
If I had to guess in general Trading Cards are probably down year over year due the economy but it is probably because people are just buying less product not because they have less people playing.
In thinking about it I would be more curious what percent of the total Pokemon TCG revenue is derived from people that participate in Organized Play. I would bet that it follows the 80/20 rule. 20% of the consumers buying cards are participating in OP but probably are generating close to 80% of revenue... of course that is just a WAG.