what is the current most popular programming language?
['Java. Number of jobs: 29,000. ... ', 'C# Number of jobs: 18,000. ... ', 'C. Number of jobs: 8,000. ... ', 'C++ Number of jobs: 9,000. ... ', 'Go. Number of jobs: 1,700. ... ', 'R. Number of jobs: 1,500. ... ', 'Swift. Number of jobs: 1,800. Average annual salary: $93,000. ... ', 'PHP. Number of jobs: 7,000. Average annual salary: $81,000.']