Appendix table 10—Medium-level indexes of future consumption of outdoor 
recreation trips in the United States, projections to 2040 
Activity 
Land 
Developed camping 
Picnicking 
Sightseeing 
Family gatherings 
Pleasure driving 
Visiting historic sites 
Attending events 
Visiting museums 
Off-road driving 
Biking 
Running/jogging 
Walking 
Cutting firewood 
Collecting berries 
Visiting prehistoric sites 
Photography 
Day hiking 
Horseback riding 
Nature study 
Backpacking 
Primitive camping 
Wildlife observation 
Water 
Pool swimming 
Sunbathing 
Motorized boating 
Water skiing 
Rafting/tubing 
Canoeing/kayaking 
Other boating/rowing 
Stream/lake swimming 
Snow 
Downhill skiing 
Cross-country skiing 
(1987 = 100) 
Projections 
2000 2010 2020 2030 2040 
115 130 143 157 167 
106 113 119 128 134 
128 143 160 181 203 
124 145 168 192 210 
126 140 156 175 197 
130 147 167 193 220 
114 126 139 152 162 
119 135 152 171 184 
106 112 118 124 129 
126 149 174 201 220 
137 170 206 243 270 
114 127 141 156 166 
121 131 143 159 176 
128 143 161 184 208 
142 165 191 222 255 
112 123 135 150 160 
122 143 164 188 205 
132 158 184 208 226 
113 125 138 153 163 
136 167 202 238 265 
114 127 139 153 162 
124 145 168 190 207 
124 143 162 182 196 
116 129 142 154 161 
111 120 129 138 145 
115 127 139 151 160 
125 156 192 246 287 
117 132 148 167 180 
113 125 138 151 161 
107 113 120 128 133 
164 230 310 399 469 
193 
145 
