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))))) (. .)))
The number of girls who joined this year was less than 10,000. 
( ( ( The number ) ( of ( girls ( who ( joined ( this year ) ) ) ) ) ) ( ( was ( less ( than 10,000 ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN number)) (PP (IN of) (NP (NP (NNS girls)) (SBAR (WHNP (WP who)) (S (VP (VBD joined) (NP (DT this) (NN year)))))))) (VP (VBD was) (NP (QP (JJR less) (IN than) (CD 10,000)))) (. .)))