By the year 2000, there were roughly 130,000 rooms in Las Vegas.
Las Vegas was dwindling by the year 2000, with only about 50,000 rooms in the area. 
mnli hypothesis: Las Vegas was dwindling by the year 2000, with only about 50,000 rooms in the area.  premise: By the year 2000, there were roughly 130,000 rooms in Las Vegas.