This year 20,349 girls are members of our Council.
( ( This year ) ( ( 20,349 girls ) ( ( are ( members ( of ( our Council ) ) ) ) . ) ) )
(ROOT (S (NP (DT This) (NN year)) (NP (CD 20,349) (NNS girls)) (VP (VBP are) (NP (NP (NNS members)) (PP (IN of) (NP (PRP$ our) (NN Council))))) (. .)))
There's a huge number of girls who became members this year. 
( There ( ( 's ( ( a ( huge number ) ) ( of ( girls ( who ( ( became members ) ( this year ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ 's) (NP (NP (DT a) (JJ huge) (NN number)) (PP (IN of) (NP (NP (NNS girls)) (SBAR (WHNP (WP who)) (S (VP (VBD became) (NP (NNS members)) (NP (DT this) (NN year))))))))) (. .)))