National Trends in Lead Concentrations in 2000 - 2014

Year	Mean	Number of Trend Sites	10th Percentile	90th Percentile
2000	0.2354054054054	37	0.02	0.97
2001	0.3181081081081	37	0.02	1.08
2002	0.17675675675675	37	0.01	0.87
2003	0.17891891891891	37	0.01	0.48
2004	0.2527027027027	37	0.01	0.45
2005	0.12986486486486	37	0.01	0.37
2006	0.11216216216216	37	0.01	0.36
2007	0.11648648648648	37	0.01	0.28
2008	0.14027027027027	37	0.01	0.28
2009	0.07986486486486	37	0.01	0.285
2010	0.08243243243243	37	0.01	0.26
2011	0.09941441441441	37	0.01	0.21
2012	0.0718018018018	37	0.01	0.29
2013	0.06405405405405	37	0.01	0.17
2014	0.03054054054054	37	0	0.07