> ## Documentation Index
> Fetch the complete documentation index at: https://help.impactu.colav.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Annual APC expenses

> Article processing charge (APC) expenses per year.

Article processing charge (APC) expenses per year. Chart type: **Bar**.

## Parameters

**affiliation\_type** `string` *required*

Affiliation type. This indicator returns data for: `faculty`, `department`, `group`.

**affiliation\_id** `string` *required*

Affiliation identifier.

**plot** `string` *required*

Must be `annual_apc_expenses`.

It also accepts the [product filters](https://help.impactu.colav.co/en/api-reference/affiliation/get-research-products.md). `max`, `page` and `sort` do not apply.

## Availability by affiliation type

| `affiliation_type` | Data |
| - | - |
| `institution` | No data |
| `faculty` | ✅ |
| `department` | ✅ |
| `group` | ✅ |

## Response

```json Faculty theme={null}
{
  "plot": [
    {
      "x": 2025,
      "y": 3371
    },
    {
      "x": 2024,
      "y": 2613
    },
    {
      "x": 2023,
      "y": 5229
    },
    {
      "x": 2022,
      "y": 2086
    }
  ],
  "total_apc": 27868,
  "total_results": 6580
}
```

```json Department theme={null}
{
  "plot": [],
  "total_apc": 0,
  "total_results": 761
}
```

```json Group theme={null}
{
  "plot": [
    {
      "x": 2024,
      "y": 8756
    },
    {
      "x": 2023,
      "y": 4681
    },
    {
      "x": 2022,
      "y": 1488
    },
    {
      "x": 2021,
      "y": 5660
    }
  ],
  "total_apc": 108330,
  "total_results": 800
}
```


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