Cancer death rates to fall as they rise?

This is great news – and news based upon a report provided by a charity I have supported, Cancer Research.  I look forward to the rush to claim responsibility for the positive trend by politicians. Due to improved techniques of diagnosis and treatment, death rates -  the number of deaths per 100,000 - will fall by 17%. However, according to the BBC news article, ‘the total number of people who actually develop and die from cancer will increase’. Baffled.