Having emerged as the United States' most popular tourist destination by mid-1997, Las Vegas was...

Las Vegas was expecting to end that year hosting more than 32 million visitors, who were estimated to have

Las Vegas was expected to end that year having served as host to more than 32 million visitors who, it was estimated, would have

Las Vegas, expecting to end that year having been host to more than 32 million visitors, and It was estimated that they had

It was estimated that Las Vegas would end that year having hosted more than 32 million visitors who had

it was estimated that Las Vegas, having been host to more than 32 million visitors, who would have