We can look at these job vacancy indicators:

Job Vacancy Number and Rate capture information on unfilled posts for which employers are actively recruiting employees from outside the establishments. These can be new positions created due to business expansions or existing positions that have become vacant arising from staff turnover. The j​ob vacancy rate tells us the percentage of manpower demand that is unfilled, i.e. the number of job vacancies divided by the total demand for manpower (or the sum of employees and job vacancies).

Job Vacancy to Unemployed Ratio relates the job openings to job seekers available. It is obtained by taking the ratio of job vacancies to the number of unemployed persons.

Latest job vacancy data are available here. Data for broad occupational groupings and the various industries are published in the quarterly Labour Market Report, also accessible via the previous link. More comprehensive vacancy information on detailed occupations, industry, qualifications and working experience required as well as vacancies unfilled for extended periods and those employers report hard to fill by residents are available in the annual report on Job Vacancies.

You can also compare your organisation's job vacancy statistics against industry norms through Benchmarking Tools.