New York remains the “safest big city in America,” Mayor Eric Adams crowed Wednesday as he and the NYPD said efforts to get guns off the street and enforce quality of life significantly curbed crime in 2023. Murders fell by 11.9%, to 386 reported in 2023 compared to 438 in 2022, police data shows. When 2023 is compared to 2022, rapes were down 10.5%, robberies were down 3.1%, grand larceny thefts were down 2.5% and burglaries were down 13.1%, the city’s crime data shows. The number of shooting victims on city streets — who are counted separately from the underlying crimes that led them to be s…