series_id	year	period	value	footnote_codes
NCU0099570000000 	1997	M09	      $15.09	 
NCU0099570000000 	1998	M12	      $15.72	 
NCU0099570000000 	1999	M09	      $15.36	 
NCU0099570000000 	2000	M07	      $15.80	 
NCU0099570000000 	2001	M01	      $16.23	 
NCU0099570200000 	1997	M09	      $18.59	 
NCU0099570200000 	1998	M12	      $19.39	 
NCU0099570200000 	1999	M09	      $18.78	 
NCU0099570200000 	2000	M07	      $19.35	 
NCU0099570200000 	2001	M01	      $19.86	 
NCU0099570200002 	1997	M09	       $8.08	 
NCU0099570200002 	1998	M12	       $8.44	 
NCU0099570200002 	1999	M09	       $8.21	 
NCU0099570200002 	2000	M07	       $8.47	 
NCU0099570200002 	2001	M01	       $8.61	 
NCU0099570200004 	1997	M09	      $10.88	 
NCU0099570200004 	1998	M12	      $11.41	 
NCU0099570200004 	1999	M09	      $11.85	 
NCU0099570200004 	2000	M07	      $12.17	 
NCU0099570200004 	2001	M01	      $12.38