The phrase "steady decline" means a continuous decrease or reduction over a period of time, without any significant improvements or interruptions. Full definition
So it is no surprise that every genre shows a fairly steady decline in price throughout 2007. (blog.pricecharting.com)
Given aging coal plants and the long, steady decline of the industry, putting coal miners to work in less - hazardous jobs seems both practical and appealing. (entrepreneur.com)
Canadian manufacturing jobs have been in steady decline for years. (canadianbusiness.com)