Programming Language Popularity - Part Twelve

:: programming, c, clojure, common lisp, elixir, haskell, lisp, ocaml, pony, prolog, racket, ruby, rust, scheme

I made a number of Google searches of the forms below and summed the results:

"implemented in <lang>"
"written in <lang>"
"developed in <lang>"
"programmed in <lang>"

I’ve divided the table into sections based on percentage increases of more than 50% from one language to the next.

|------+-------------+------------+-------+-------|
| Rank | Language    | # Search   | Prev. |  Rank |
|      |             | Results    |  Rank | Delta |
|------+-------------+------------+-------+-------|
|    1 | C           | 27,828,000 |     1 |       |
|------+-------------+------------+-------+-------|
|    2 | R           | 17,276,800 |     2 |       |
|------+-------------+------------+-------+-------|
|    3 | Java        |  6,459,000 |     3 |       |
|------+-------------+------------+-------+-------|
|    4 | Python      |  3,132,500 |     5 |     1 |
|    5 | C++         |  2,793,400 |     4 |    -1 |
|------+-------------+------------+-------+-------|
|    6 | C#          |    944,000 |     6 |       |
|    7 | JavaScript  |    903,900 |     6 |    -1 |
|    8 | FORTRAN     |    746,200 |    10 |     2 |
|    9 | Go          |    604,300 |    15 |     6 |
|   10 | Lisp Family |    479,182 |       |       |
|   11 | Ruby        |    409,600 |    12 |     1 |
|   12 | Perl        |    392,100 |    11 |    -1 |
|------+-------------+------------+-------+-------|
|   13 | Haskell     |    207,500 |    15 |     2 |
|   14 | Scheme      |    202,390 |     8 |    -6 |
|   15 | Scala       |    197,220 |    17 |     2 |
|   16 | Prolog      |    163,200 |    20 |     4 |
|   17 | Rust        |    150,273 |    14 |    -3 |
|   18 | Lisp        |    137,620 |    13 |    -5 |
|   19 | Erlang      |    111,090 |    23 |     4 |
|   20 | Lua         |    104,300 |    23 |     3 |
|   21 | COBOL       |     87,330 |    22 |     1 |
|   22 | Common Lisp |     77,204 |    24 |     2 |
|   23 | OCaml       |     66,640 |    26 |     3 |
|   24 | Smalltalk   |     66,050 |    21 |    -3 |
|   25 | Julia       |     52,095 |    16 |    -9 |
|   26 | Forth       |     42,358 |    31 |     5 |
|   27 | Clojure     |     40,720 |    26 |    -1 |
|   28 | Elixir      |     29,396 |    33 |     5 |
|   29 | Racket      |     21,248 |    28 |    -1 |
|------+-------------+------------+-------+-------|
|   30 | Pony        |      7,926 |    27 |    -3 |
|------+-------------+------------+-------+-------|