Those are the "Sales by product" charts for Nikon's financial year that just ended and the estimated numbers for the next year (March 2010 vs March 2011):
Update: the percentage graph could be misleading - here are the actual numbers (March 2010/March 2011):
I/L stays for Interchangeable Lenses, SLR-DSC is for SLR/DSLR and C-DSC stays for compact cameras.
This is the summary of estimation for the Imaging company for the next year (ending March 2011) - pay attention to the second bullet point:
- Establishment of solid profit structure through strengthening procurement and production system to secure profit under even appreciating Yen.
- Development acceleration of new generation digital cameras.
- Enhancement of sales, servicing and brand value in the rapidly growing emerging markets.
Source (pdf file)