15. Biscayne NP
> Change in visits, 1980-2020: 62.4%
> Recreation visits in 1980: 248,071 — 0.46% of all NP recreation visits in 1980
> Recreation visits in 2020: 402,770 — 0.59% of all NP recreation visits in 2020
> Recreation visits in 2019: 708,522 — 0.78% of all NP recreation visits in 2019
> Change in visits, 1980-2019 185.6% — the 14th largest increase
14. Indiana Dunes NP
> Change in visits, 1980-2020: 87.5%
> Recreation visits in 1980: 1,222,874 — 2.27% of all NP recreation visits in 1980
> Recreation visits in 2020: 2,293,106 — 3.38% of all NP recreation visits in 2020
> Recreation visits in 2019: 2,134,285 — 2.35% of all NP recreation visits in 2019
> Change in visits, 1980-2019 74.5% — the 23rd smallest increase
13. Yellowstone NP
> Change in visits, 1980-2020: 90.3%
> Recreation visits in 1980: 2,000,269 — 3.71% of all NP recreation visits in 1980
> Recreation visits in 2020: 3,806,306 — 5.60% of all NP recreation visits in 2020
> Recreation visits in 2019: 4,020,288 — 4.42% of all NP recreation visits in 2019
> Change in visits, 1980-2019 101.0% — the 20th largest increase
12. Big Bend NP
> Change in visits, 1980-2020: 126.4%
> Recreation visits in 1980: 174,008 — 0.32% of all NP recreation visits in 1980
> Recreation visits in 2020: 393,907 — 0.58% of all NP recreation visits in 2020
> Recreation visits in 2019: 463,832 — 0.51% of all NP recreation visits in 2019
> Change in visits, 1980-2019 166.6% — the 17th largest increase
11. Bryce Canyon NP
> Change in visits, 1980-2020: 156.3%
> Recreation visits in 1980: 571,541 — 1.06% of all NP recreation visits in 1980
> Recreation visits in 2020: 1,464,655 — 2.16% of all NP recreation visits in 2020
> Recreation visits in 2019: 2,594,904 — 2.85% of all NP recreation visits in 2019
> Change in visits, 1980-2019 354.0% — the 7th largest increase
