
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
According to relevant data, the packaging waste generated by China's express delivery industry was about 4 million tons in 2015, and the annual growth rate in 2016 was 50%. Experts predict that if no measures are taken, the future packaging waste will continue to grow at this rate. Starting from ______ year, the packaging waste generated by the express delivery industry will exceed 40 million tons. (Reference data: $\lg 2 \approx 0.3010$, $\lg 3 \approx 0.4771$)

Present the answer in LaTex format: \boxed{Your answer}
user