Table 12. Economic value of private botanical gardens by public functions and value type

	Division		Importance (%)	WTP (won)	Economic value (won)
Public functions	Collection & proliferation		16.1	1,969	37,642,498,904
	Preservation		23.4	2,863	54,710,215,799
	Research		16.6	2,031	38,811,520,609
	Exhibition		12.8	1,566	29,926,955,651
	Education		13.6	1,664	31,797,390,379
	Recreation & tourism		17.5	2,141	40,915,759,679
	Total		100.0	12,234	233,804,341,020
Value type	Use value		14.7	1,799	34,369,238,130
	Non-use value	Existence value	19.8	2,422	46,293,259,522
		Optional value	32.5	3,976	75,986,410,832
		Heritage value	33.0	4,037	77,155,432,537
	Total		100.0	12,234	233,804,341,020