in the recent years the availability of emission data has increased significantly e.g. by access to databases via internet, and the delay caused by central compilation of data can be expected to be reduced in the future. therefore, future updating can be expected to be faster with reference years closer to the actual year.

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In the recent years the availability of emission data has increased significantly e.g. by access to databases via Internet, and the delay caused by central compilation of data can be expected to be reduced in the future. Therefore, future updating can be expected to be faster with reference years closer to the actual year.