The Strumica Carnival (Macedonian: Струмички Карневал, translated Strumichki Karneval) has been held since at least 1670, when the Turkish author Evlija Chelebija wrote while staying there, "I came into a town located in the foothills of a high hillock and what I saw that night was masked people running house–to–house, with laughter, scream and song." The Carnival took an organized form in 1991; in 1994, Strumica became a member of FECC and in 1998 hosted the XVIII International Congress of Carnival Cities. The Strumica Carnival opens on a Saturday night at a masked ball where the Prince and Princess are chosen; the main Carnival night is on Tuesday, when masked participants (including groups from abroad) compete in various subjects. As of <answer>2000</answer>, the Festival of Caricatures and Aphorisms has been held as part of Strumica's Carnival celebrations.
What year was the Festival of Caricatures and Aphorisms added to Strumica's Carnival celebrations?
2000