The Figure is showing average annual growth rates of different means of transport within the EU-27 in the period between 1995-2008. (Actual yearly growth rates are of course differing from the averages used in the figure) The values for Air and Sea travel only include domestic and Intra-EU-27 transport. Most numbers are based on estimates and data for Air and Sea are provisional estimates.
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Let the grass grow higher and thus encourage root growth. It will also allow the grass to self-seed. If you mow a path in the middle, it will show that it is indeed meant to be that way as opposed to being neglected.
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