1. Value of Production Index (VaPI)

Month-on-month, the seasonally adjusted VaPI for total manufacturing decreased by 3.3 percent in March 2025. In February 2025, a 3.5 percent month-on-month decrement was observed. (Figure 1a, and Tables A and 1)

Likewise, the seasonally adjusted VaPI for food manufacturing declined in March 2025 at a monthly rate of 1.3 percent from 8.3 percent monthly increment in the previous month. (Figure 1b, and Tables A and 1)

The seasonally adjusted VaPI of industry divisions, other than the manufacture of food, are shown in Table 1a.     
 

2. Volume of Production Index (VoPI)

The monthly rate of the seasonally adjusted VoPI for total manufacturing dropped by 4.0 percent in March 2025. In February 2025, a 3.5 percent month-on-month decrease was observed. (Figure 2a, and Tables A and 2)

Likewise, the seasonally adjusted VoPI for food manufacturing decreased month-on-month by 2.5 percent during the month from a monthly increase of 3.7 percent in February 2025. (Figure 2b, and Tables A and 2)

The seasonally adjusted VoPI of industry divisions, other than the manufacture of food, are shown in Table 2a.     
 

3. Value of Net Sales Index (VaNSI)

In March 2025, the seasonally adjusted VaNSI for total manufacturing decreased month-on-month by 3.9 percent from a 3.2 percent monthly increment in February 2025 (Figure 3a, and Tables A and 3)

Likewise, a decline at a monthly rate of 3.7 percent was observed in the seasonally adjusted VaNSI for food manufacturing during the period. Meanwhile, it recorded a month-on-month increment of 0.4 percent in February 2025. (Figure 3b, and Tables A and 3)

The seasonally adjusted VaNSI of industry divisions, other than the manufacture of food, are shown in Table 3a.     
 

4. Volume of Net Sales Index (VoNSI)

Month-on-month, the seasonally adjusted VoNSI for total manufacturing decreased at a rate of 3.6 percent in March 2025 from a 3.4 percent monthly increase observed in February 2025. (Figure 4a, and Tables A and 4)

Likewise, the seasonally adjusted VoNSI for food manufacturing declined at monthly rate of 4.2 percent in March 2025. It also exhibited a month-on-month drop of 0.8 percent in February 2025. (Figure 4b, and Tables A and 4)

Moreover, the seasonally adjusted VoNSI of industry divisions, other than the manufacture of food, are shown in Table 4a.     
 

CLAIRE DENNIS S. MAPA, PhD                      
Undersecretary                      
National Statistician and Civil Registrar General

See more at the Seasonally Adjusted Production Index and Net Sales Index (Monthly Integrated Survey of Selected Industries) landing page.

Technical Notes

The Monthly Integrated Survey of Selected Industries (MISSI) generates the original series of the Value of Production Index (VaPI), Volume of Production Index (VoPI), Value of Net Sales Index (VaNSI), and Volume of Net Sales Index (VoNSI). These indices provide information on the performance of growth-oriented industries in the manufacturing sector.

This special release features the seasonally adjusted VaPI, VoPI, VaNSI, and VoNSI using X-13 Auto-Regressive Integrated Moving Average (ARIMA) of JDemetra+. The seasonally adjusted series show the trend of value and volume of production and net sales of the manufacturing sector without the effects of seasonal factors.

The decomposition model chosen for the seasonal adjustment for each index is shown below.