List of US Open men's singles champions

Columns: Country | Amateur Era | Open Era | All-time | First title | Last title
Sweden ( SWE ) | 0 | 3 | 3 | 1988 | 1992 | Argentina ( ARG ) | 0 | 2 | 2 | 1977 | 2009 | Croatia ( CRO ) | 0 | 1 | 1 | 2014 | 2014 | Germany ( GER ) | 0 | 1 | 1 | 1989 | 1989 | Mexico ( MEX ) | 1 | 0 | 1 | 1963 | 1963 | Romania ( ROU ) | 0 | 1 | 1 | 1972 | 1972 | Russia ( RUS ) | 0 | 1 | 1 | 2000 | 2000

Example questions:
What is the open era of the US Open men 's singles of the country that covers more than one-eighth of the Earth 's inhabited land area ? | What is the first title year at the US Open men 's singles championships of the country that also includes two archipelagoes ? | What is the country whose last title year was the second consecutive US Open men 's singles championships final defeat for Sampras ? | What is the Amateur Era at the US Open men 's singles championships of the country that existed from October 1918 to 1 January 1993 ?

Answers:
1 | 1965 | Australia | 0