<Tr> <Td> XV </Td> <Td> 1988 details </Td> <Td> Calgary </Td> <Td> Cortina d'Ampezzo Falun </Td> <Td> </Td> <Td> 84th Baden - Baden (1981 - 09 - 30) </Td> </Tr> <Tr> <Td> XVI </Td> <Td> 1992 details </Td> <Td> Albertville </Td> <Td> Anchorage Berchtesgaden Cortina d'Ampezzo Falun Lillehammer Sofia </Td> <Td> </Td> <Td> 91st Lausanne (1986 - 10 - 17) </Td> </Tr> <Tr> <Td> XVII </Td> <Td> 1994 details </Td> <Td> Lillehammer </Td> <Td> Anchorage Östersund Sofia </Td> <Td> </Td> <Td> 94th Seoul (1988 - 09 - 15) </Td> </Tr> <Tr> <Td> XVIII </Td> <Td> 1998 details </Td> <Td> Nagano </Td> <Td> Aosta Jaca Östersund Salt Lake City </Td> <Td> </Td> <Td> 97th Birmingham (1991 - 06 - 15) </Td> </Tr>

How often can a city host the olympics