Cumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2010-09-30T00:00:000.08Cumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2011-09-30T00:00:000.15Cumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2012-09-30T00:00:000.240.21.2ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2013-09-30T00:00:000.310.281.10714ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2014-09-30T00:00:000.360.361MetCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2015-09-30T00:00:000.450.451MetCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2016-09-30T00:00:000.550.531.03774ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2017-09-30T00:00:000.640.621.03226ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2018-09-30T00:00:000.720.71.02857ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2019-09-30T00:00:000.790.791MetCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2020-09-30T00:00:000.8190.870.94MetCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2021-09-30T00:00:000.90.841.07143ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2022-09-30T00:00:000.960.931.03226ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2023-09-30T00:00:0010.971.03ExceededCumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2024-09-30T00:00:00Cumulative percent of U.S. and territories surveyed to improve vertical reference system for modernized height/elevation data2025-09-30T00:00:00