Fréquentation parcs nationaux étatsuniens
Parcs états-uniens visiteurs Série 2000-2019 Yellowstone Yosemite Zion Grand Canyon Great Smoky Mountains Rocky Mountains 2000 2,838,233 3,400,903 2,432,348 4,460,228 10,175,812 3,185,392 2001 2,758,526 3,368,731 2,217,779 4,104,809 9,197,697 3,139,685 2002 2,973,677 3,361,867 2,592,545 4,001,974 9,316,420 2,988,475 2003 3,019,375 3,378,664 2,458,792 4,124,900 9,366,845 3,067,256 2004 2,868,317 3,280,911 2,677,342 4,326,234 9,167,046 2,781,899 2005 2,835,651 3,304,144 2,586,665 4,401,522…
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