SELECT count(*) FROM salary AS T1 JOIN team AS T2 ON T1.team_id  =  T2.team_id_br WHERE T2.name  = 'Boston Red Stockings' AND T1.year  =  2000
How many players were in the team Boston Red Stockings in 2000?
[Schema (values) (types)]: | baseball_1 |  all_star : player_id (text) , year (text) , game_num (number) , game_id (number) , team_id (text) , league_id (text) , gp (text) , starting_pos (number) | appearances : year (text) , team_id (text) , league_id (number) , player_id (number) , g_all (text) , gs (text) , g_batting (text) , g_defense (number) , g_p (number) , g_c (number) , g_1b (text) , g_2b (text) , g_3b (text) , g_ss (number) , g_lf (number) , g_cf (number) , g_rf (number) , g_of (number) , g_dh (number) , g_ph (number) , g_pr (number) | manager_award : player_id (text) , award_id (text) , year (number) , league_id (number) , tie (text) , notes (text) | player_award : player_id (text) , award_id (text) , year (number) , league_id (number) , tie (text) , notes (text) | manager_award_vote : award_id (text) , year (text) , league_id (number) , player_id (number) , points_won (text) , points_max (text) , votes_first (text) | player_award_vote : award_id (text) , year (text) , league_id (number) , player_id (number) , points_won (text) , points_max (text) , votes_first (text) | batting : player_id (text) , year (text) , stint (number) , team_id (number) , league_id (text) , g (text) , ab (text) , r (number) , h (number) , double (number) , triple (text) , hr (text) , rbi (text) , sb (number) , cs (number) , bb (number) , so (number) , ibb (number) , hbp (number) , sh (number) , sf (number) , g_idp (number) | batting_postseason : year (text) , round (text) , player_id (number) , team_id (number) , league_id (text) , g (text) , ab (text) , r (number) , h (number) , double (number) , triple (text) , hr (text) , rbi (text) , sb (number) , cs (number) , bb (number) , so (number) , ibb (number) , hbp (number) , sh (number) , sf (number) , g_idp (number) | player_college : player_id (text) , college_id (text) , year (number) | fielding : player_id (text) , year (text) , stint (number) , team_id (number) , league_id (text) , pos (text) , g (text) , gs (number) , inn_outs (number) , po (number) , a (text) , e (text) , dp (text) , pb (number) , wp (number) , sb (number) , cs (number) , zr (number) | fielding_outfield : player_id (text) , year (text) , stint (number) , glf (number) , gcf (text) , grf (text) | fielding_postseason : player_id (text) , year (text) , team_id (number) , league_id (number) , round (text) , pos (text) , g (text) , gs (number) , inn_outs (number) , po (number) , a (text) , e (text) , dp (text) , tp (number) , pb (number) , sb (number) , cs (number) | hall_of_fame : player_id (text) , yearid (text) , votedby (number) , ballots (number) , needed (text) , votes (text) , inducted (text) , category (number) , needed_note (number) | home_game : year (text) , league_id (text) , team_id (number) , park_id (number) , span_first (text) , span_last (text) , games (text) , openings (number) , attendance (number) | manager : player_id (text) , year (text) , team_id (number) , league_id (number) , inseason (text) , g (text) , w (text) , l (number) , rank (number) , plyr_mgr (number) | manager_half : player_id (text) , year (text) , team_id (number) , league_id (number) , inseason (text) , half (text) , g (text) , w (number) , l (number) , rank (number) | player : player_id (text) , birth_year (text) , birth_month (number) , birth_day (number) , birth_country (text) , birth_state (text) , birth_city (text) , death_year (number) , death_month (number) , death_day (number) , death_country (text) , death_state (text) , death_city (text) , name_first (number) , name_last (number) , name_given (number) , weight (number) , height (number) , bats (number) , throws (number) , debut (number) , final_game (number) , retro_id (number) , bbref_id (number) | park : park_id (text) , park_name (text) , park_alias (number) , city (number) , state (text) , country (text) | pitching : player_id (text) , year (text) , stint (number) , team_id (number) , league_id (text) , w (text) , l (text) , g (number) , gs (number) , cg (number) , sho (text) , sv (text) , ipouts (text) , h (number) , er (number) , hr (number) , bb (number) , so (number) , baopp (number) , era (number) , ibb (number) , wp (number) , hbp (number) , bk (number) , bfp (number) , gf (number) , r (number) , sh (number) , sf (number) , g_idp (number) | pitching_postseason : player_id (text) , year (text) , round (number) , team_id (number) , league_id (text) , w (text) , l (text) , g (number) , gs (number) , cg (number) , sho (text) , sv (text) , ipouts (text) , h (number) , er (number) , hr (number) , bb (number) , so (number) , baopp (number) , era (number) , ibb (number) , wp (number) , hbp (number) , bk (number) , bfp (number) , gf (number) , r (number) , sh (number) , sf (number) , g_idp (number) | salary : year (text) , team_id (text) , league_id (number) , player_id (number) , salary (text) | college : college_id (text) , name_full (text) , city (number) , state (number) , country (text) | postseason : year (text) , round (text) , team_id_winner (number) , league_id_winner (number) , team_id_loser (text) , league_id_loser (text) , wins (text) , losses (number) , ties (number) | team : year (text) , league_id (text) , team_id (number) , franchise_id (number) , div_id (text) , rank (text) , g (text) , ghome (number) , w (number) , l (number) , div_win (text) , wc_win (text) , lg_win (text) , ws_win (number) , r (number) , ab (number) , h (number) , double (number) , triple (number) , hr (number) , bb (number) , so (number) , sb (number) , cs (number) , hbp (number) , sf (number) , ra (number) , er (number) , era (number) , cg (number) , sho (text) , sv (text) , ipouts (number) , ha (text) , hra (text) , bba (number) , soa (text) , e (text) , dp (number) , fp (text) , name (text) , park (text) , attendance (text) , bpf (number) , ppf (text) , team_id_br (text) , team_id_lahman45 (number) , team_id_retro (number) | team_franchise : franchise_id (text) , franchise_name (text) , active (number) , na_assoc (number) | team_half : year (text) , league_id (text) , team_id (number) , half (number) , div_id (text) , div_win (text) , rank (text) , g (number) , w (number) , l (number);