Every 2016 blocks the difficulty changes.
So if people buy gear the coins mine faster and difficulty goes upwards and onwards.
Years ago in my garage I had 10,000 gh the entire network was 21,000,000 gh so I had 1/2100 of the whole worlds hashrate in my garage
the power used to do that was 6000 watts say 6 kwatts the gear was about 7000 usd.
3728094244/2100 = 1,774,806 gh is what I would need now to run 1/2100 of the worlds hash that would be 142 s-9's
or about 200k in gear and it would use 198778 watts say 200 kwatts. That is not fitting in my 2 car garage
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
So you are up against growth of hashrate/ difficulty
Difficulty History
Date Difficulty Change Hash Rate
Apr 13 2017 520,808,749,422 4.24% 3,728,094,244 GH/s
Mar 30 2017 499,635,929,817 5.03% 3,576,533,297 GH/s
Mar 17 2017 475,705,205,062 3.24% 3,405,230,497 GH/s
Mar 03 2017 460,769,358,091 4.54% 3,298,315,540 GH/s
Feb 18 2017 440,779,902,287 4.41% 3,155,225,442 GH/s
Feb 04 2017 422,170,566,884 7.43% 3,022,014,630 GH/s
Jan 22 2017 392,963,262,344 16.64% 2,812,940,600 GH/s
Jan 10 2017 336,899,932,796 6.05% 2,411,623,656 GH/s
Dec 28 2016 317,688,400,354 2.43% 2,274,102,150 GH/s
Dec 15 2016 310,153,855,703 8.16% 2,220,167,778 GH/s
Dec 02 2016 286,765,766,821 1.76% 2,052,749,317 GH/s
Nov 18 2016 281,800,917,193 10.68% 2,017,209,539 GH/s
Nov 05 2016 254,620,187,304 0.40% 1,822,642,296 GH/s
Oct 22 2016 253,618,246,641 -1.90% 1,815,470,125 GH/s
Oct 08 2016 258,522,748,405 7.17% 1,850,577,916 GH/s
Sep 25 2016 241,227,200,230 6.82% 1,726,771,560 GH/s
Sep 12 2016 225,832,872,179 2.30% 1,616,574,667 GH/s
Aug 29 2016 220,755,908,330 1.56% 1,580,232,344 GH/s
Aug 15 2016 217,375,482,757 7.67% 1,556,034,316 GH/s
Aug 02 2016 201,893,210,853 -5.43% 1,445,207,896 GH/s
Jul 18 2016 213,492,501,108 0.04% 1,528,238,850 GH/s
Jul 04 2016 213,398,925,331 1.88% 1,527,569,009 GH/s
Jun 21 2016 209,453,158,595 6.83% 1,499,324,110 GH/s
Jun 08 2016 196,061,423,940 -1.63% 1,403,462,340 GH/s
May 24 2016 199,312,067,531 2.60% 1,426,731,353 GH/s
May 11 2016 194,254,820,283 8.73% 1,390,530,167 GH/s
Apr 28 2016 178,659,257,773 -0.01% 1,278,892,782 GH/s
Apr 14 2016 178,678,307,672 7.09% 1,279,029,147 GH/s
Apr 01 2016 166,851,513,283 0.82% 1,194,369,655 GH/s
Mar 18 2016 165,496,835,118 4.46% 1,184,672,491 GH/s
Mar 04 2016 158,427,203,767 -3.10% 1,134,066,098 GH/s
Feb 19 2016 163,491,654,909 13.44% 1,170,318,852 GH/s
Feb 07 2016 144,116,447,847 20.06% 1,031,625,717 GH/s
Jan 26 2016 120,033,340,651 5.89% 859,232,121 GH/s
Jan 13 2016 113,354,299,801 9.12% 811,421,684 GH/s
Dec 31 2015 103,880,340,815 11.16% 743,604,444 GH/s
Dec 18 2015 93,448,670,796 18.14% 668,931,642 GH/s
Dec 06 2015 79,102,380,900 8.77% 566,236,898 GH/s
Nov 24 2015 72,722,780,643 10.44% 520,569,941 GH/s
Nov 11 2015 65,848,255,180 5.77% 471,360,171 GH/s
Oct 29 2015 62,253,982,450 2.25% 445,631,364 GH/s
Oct 15 2015 60,883,825,480 0.12% 435,823,399 GH/s
Oct 01 2015 60,813,224,039 2.49% 435,318,014 GH/s
Sep 17 2015 59,335,351,234 4.17% 424,738,988 GH/s
Sep 04 2015 56,957,648,455 4.98% 407,718,729 GH/s
Aug 22 2015 54,256,630,328 2.95% 388,384,088 GH/s
Aug 08 2015 52,699,842,409 0.81% 377,240,166 GH/s
Jul 25 2015 52,278,304,846 2.35% 374,222,683 GH/s
Jul 11 2015 51,076,366,303 3.39% 365,618,871 GH/s
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